# Microsoft Teams, 3CX, Nextiva vs Slack Comparison

| | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Star Rating** | 4.4 out of 5 | 4.4 out of 5 | 4.5 out of 5 | 4.5 out of 5 | 
| **Total Reviews** | 19,004 | 546 | 3,566 | 39,046 | 
| **Largest Market Segment** | Enterprise (39.5% of reviews) | Mid-Market (54.9% of reviews) | Small-Business (77.3% of reviews) | Small-Business (41.0% of reviews) | 
| **Entry Level Price** | $4.80 1 User Per Month | Free 10 Users | Starting at $15.00 1 User Per Month | $0.00 | 

---
## Top Pros & Cons

### Microsoft Teams

Pros:
- Team Collaboration (896 reviews)
- Ease of Use (845 reviews)

Cons:
- Slow Loading (418 reviews)
- Performance Issues (266 reviews)

### 3CX

Pros:
- Ease of Use (44 reviews)
- Reliability (31 reviews)

Cons:
- Complex Processes (11 reviews)
- Difficult Configuration (10 reviews)

### Nextiva

Pros:
- Customer Support (127 reviews)
- Ease of Use (117 reviews)

Cons:
- Complexity (25 reviews)
- Difficult Configuration (25 reviews)

### Slack

Pros:
- Ease of Use (3483 reviews)
- Team Collaboration (3150 reviews)

Cons:
- Notification Issues (1137 reviews)
- Missing Features (941 reviews)

---
## Ratings Comparison
| Rating | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
  | **Meets Requirements** | 8.9 (14137 reviews) | 8.9 (365 reviews) | 9.0 (2836 reviews) | 9.2 (31639 reviews) | 
  | **Ease of Use** | 8.8 (14379 reviews) | 9.0 (373 reviews) | 8.7 (2885 reviews) | 9.2 (32496 reviews) | 
  | **Ease of Setup** | 9.1 (4730 reviews) | 8.8 (253 reviews) | 8.4 (2170 reviews) | 9.2 (8813 reviews) | 
  | **Ease of Admin** | 8.7 (2786 reviews) | 9.0 (236 reviews) | 8.6 (1986 reviews) | 8.9 (5442 reviews) | 
  | **Quality of Support** | 8.6 (11392 reviews) | 7.9 (332 reviews) | 9.0 (2821 reviews) | 8.8 (22025 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.9 (2803 reviews) | 8.6 (226 reviews) | 8.8 (1968 reviews) | 9.1 (4924 reviews) | 
  | **Product Direction (% positive)** | 8.6 (13425 reviews) | 8.4 (365 reviews) | 8.3 (2714 reviews) | 8.7 (30851 reviews) | 

---
## Pricing

### Microsoft Teams

#### Entry-Level Pricing

Plan: Teams Essentials

Price: $4.80 1 User Per Month

Key Features:
- Seamless integration with Exchange: Teams Essentials works with On-Premises or Hosted Exchange so that Office clients can get Teams in the cloud.
-  Upgraded online meetings: Provide professional features like virtual backgrounds, screen sharing, and recording from any device for your clients.
- Fully-enabled dynamic chats: Keep conversations going internally or externally with continuous chat, searchable history, and in-app file sharing and collaboration.

[Learn more about Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews)

#### Free Trial

No

### 3CX

#### Entry-Level Pricing

Plan: 3CX SMB

Price: Free 10 Users

Description: Free for up to 10 users.

Key Features:
- Next-gen phone system
- Bring your own SIP Trunk
- WFH: remote-enable teams

[Browse all 3 editions](https://www.g2.com/products/3cx/pricing)

#### Free Trial

Yes

### Nextiva

#### Entry-Level Pricing

Plan: Core

Price: Starting at $15.00 1 User Per Month

Description: For small teams! Reliably run your business and communicate with your team and customers through unified voice, video, SMS, and digital channels with instant setup, no hardware, centralized conversations, and built-in tools for productivity, collaboration, and responsiveness.

Key Features:
- Inbound & Outbound Voice
- Business SMS
- Video Meetings

[Browse all 6 editions](https://www.g2.com/products/nextiva/pricing)

#### Free Trial

Yes

### Slack

#### Entry-Level Pricing

Plan: Free

Price: $0.00

Description: For teams wanting to try out Slack for an unlimited period of time



Key Features:
- Searchable message archives, up to 10k of your team’s most recent messages
- 10 apps or service integrations
- Native apps for iOS, Android, Mac & Windows Desktop

[Browse all 4 editions](https://www.g2.com/products/slack/pricing)

#### Free Trial

Yes

---
## Features Comparison By Category

### Business Instant Messaging

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | 8.5/10 | 10553 |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 8.2/10 | 16032 |

#### Business Instant Messaging

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **File Sharing** | 8.9 (9000 reviews) | Not enough data | Not enough data | 9.1 (13979 reviews) | 
| **Notifications** | 8.7 (9194 reviews) | Not enough data | Not enough data | 9.0 (14513 reviews) | 
| **Search** | 8.4 (8500 reviews) | Not enough data | Not enough data | 8.6 (13805 reviews) | 

#### Business Instant Messaging 

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Audio Conferencing** | 9.0 (8465 reviews) | Not enough data | Not enough data | 8.5 (10250 reviews) | 
| **Video Conferencing** | 9.0 (8452 reviews) | Not enough data | Not enough data | 8.1 (9583 reviews) | 

#### Business Instant Messaging

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Mobile Application** | 8.8 (8190 reviews) | Not enough data | Not enough data | 9.1 (13686 reviews) | 
| **Web Application** | 8.8 (8372 reviews) | Not enough data | Not enough data | 9.2 (13291 reviews) | 
| **Integrations** | 8.7 (7378 reviews) | Not enough data | Not enough data | 9.0 (11840 reviews) | 

#### Generative AI - Business Instant Messaging

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Text Summarization** | 8.2 (1034 reviews) | Not enough data | Not enough data | 7.5 (1485 reviews) | 

#### AI - Business Instant Messaging

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **AI Powered Search** | 8.1 (996 reviews) | Not enough data | Not enough data | 7.5 (1467 reviews) | 
| **Smart Notifications** | 8.3 (995 reviews) | Not enough data | Not enough data | 7.9 (1475 reviews) | 
| **AI Powered Language Translation** | 8.0 (981 reviews) | Not enough data | Not enough data | 7.4 (1447 reviews) | 
| **Content Generation** | 8.1 (974 reviews) | Not enough data | Not enough data | 7.4 (1449 reviews) | 

#### Agentic AI - Business Instant Messaging

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Cross-system Integration** | 8.0 (588 reviews) | Not enough data | Not enough data | 7.7 (877 reviews) | 
| **Natural Language Interaction** | 8.1 (573 reviews) | Not enough data | Not enough data | 7.7 (861 reviews) | 

### Workflow Management

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 8.4/10 | 905 |

#### Setup

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Activities** | Not enough data | Not enough data | Not enough data | 9.1 (677 reviews) | 
| **Flows** | Not enough data | Not enough data | Not enough data | 8.9 (673 reviews) | 
| **Dependencies** | Not enough data | Not enough data | Not enough data | 8.7 (648 reviews) | 
| **Notifications** | Not enough data | Not enough data | Not enough data | 8.9 (687 reviews) | 

#### Management

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Updates** | Not enough data | Not enough data | Not enough data | 9.0 (662 reviews) | 
| **Audit Trail** | Not enough data | Not enough data | Not enough data | 8.7 (640 reviews) | 
| **Integration** | Not enough data | Not enough data | Not enough data | 8.9 (659 reviews) | 

#### Generative AI

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 7.7 (556 reviews) | 

#### Agentic AI - Workflow Management

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 7.7 (276 reviews) | 
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 7.9 (272 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 8.1 (281 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 7.9 (278 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 7.9 (277 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 7.9 (278 reviews) | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 8.0 (281 reviews) | 

### Q&A Platforms

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 8.8/10 | 409 |

#### Account Options

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Single Sign-On (SSO)** | Not enough data | Not enough data | Not enough data | 9.2 (285 reviews) | 
| **Social Login** | Not enough data | Not enough data | Not enough data | 8.4 (277 reviews) | 
| **Reputation System** | Not enough data | Not enough data | Not enough data | 8.6 (268 reviews) | 
| **Topic Subscription** | Not enough data | Not enough data | Not enough data | 8.7 (274 reviews) | 
| **Bookmarking** | Not enough data | Not enough data | Not enough data | 8.9 (284 reviews) | 
| **History** | Not enough data | Not enough data | Not enough data | 8.9 (278 reviews) | 

#### Q&A Tools

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Tags** | Not enough data | Not enough data | Not enough data | 9.1 (283 reviews) | 
| **Commenting System** | Not enough data | Not enough data | Not enough data | 9.1 (278 reviews) | 
| **Notifications** | Not enough data | Not enough data | Not enough data | 9.1 (284 reviews) | 
| **Voting** | Not enough data | Not enough data | Not enough data | 8.7 (270 reviews) | 
| **Integrations** | Not enough data | Not enough data | Not enough data | 9.0 (280 reviews) | 
| **Knowledge Integrations** | Not enough data | Not enough data | Not enough data | 8.9 (272 reviews) | 
| **Embedding** | Not enough data | Not enough data | Not enough data | 8.6 (265 reviews) | 
| **Formatting** | Not enough data | Not enough data | Not enough data | 8.8 (269 reviews) | 
| **Analytics** | Not enough data | Not enough data | Not enough data | 8.5 (265 reviews) | 

### Knowledge Base

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 8.3/10 | 496 |

#### Knowledge Pages

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Templates** | Not enough data | Not enough data | Not enough data | 8.4 (343 reviews) | 
| **In-Content Feedback** | Not enough data | Not enough data | Not enough data | 8.3 (343 reviews) | 
| **Versioning and Version History** | Not enough data | Not enough data | Not enough data | 8.1 (332 reviews) | 
| **Decision Trees** | Not enough data | Not enough data | Not enough data | 8.1 (330 reviews) | 
| **Duplicate Detection** | Not enough data | Not enough data | Not enough data | 7.9 (325 reviews) | 
| **Content Editor** | Not enough data | Not enough data | Not enough data | 8.4 (330 reviews) | 

#### Knowledge Dissemination

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Page Analytics** | Not enough data | Not enough data | Not enough data | 8.2 (321 reviews) | 
| **Permissions** | Not enough data | Not enough data | Not enough data | 8.7 (329 reviews) | 
| **Knowledge Sharing** | Not enough data | Not enough data | Not enough data | 9.0 (338 reviews) | 
| **Notifications** | Not enough data | Not enough data | Not enough data | 8.9 (337 reviews) | 
| **Advanced Search** | Not enough data | Not enough data | Not enough data | 8.3 (330 reviews) | 
| **Browser Extension** | Not enough data | Not enough data | Not enough data | 8.2 (318 reviews) | 
| **Organization** | Not enough data | Not enough data | Not enough data | 8.7 (335 reviews) | 
| **Other Integrations** | Not enough data | Not enough data | Not enough data | 8.6 (323 reviews) | 
| **Knowledge Integrations** | Not enough data | Not enough data | Not enough data | 8.6 (315 reviews) | 

#### Agentic AI - Knowledge Base

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 7.9 (197 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 7.9 (199 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 7.8 (197 reviews) | 

### Contact Center

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | 8.2/10 | 303 |
| **Nextiva** | 8.5/10 | 207 |
| **Slack** | N/A | N/A |

#### Channels

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Voice** | Not enough data | 9.4 (142 reviews) ✓ Verified | 9.4 (194 reviews) | Not enough data | 
| **Social** | Not enough data | Feature Not Available | 7.9 (176 reviews) | Not enough data | 
| **Web Chat** | Not enough data | 8.6 (94 reviews) ✓ Verified | 7.7 (174 reviews) | Not enough data | 
| **Mobile SMS** | Not enough data | 7.3 (71 reviews) | 8.2 (178 reviews) | Not enough data | 
| **Email** | Not enough data | Feature Not Available | 8.2 (168 reviews) | Not enough data | 

#### Generative AI

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **AI Text-to-Speech** | Not enough data | 6.9 (23 reviews) | 7.6 (84 reviews) | Not enough data | 

#### Functions

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Session Routing** | Not enough data | 8.9 (181 reviews) ✓ Verified | 8.7 (173 reviews) | Not enough data | 
| **Session Queuing** | Not enough data | 8.9 (185 reviews) ✓ Verified | 8.6 (173 reviews) | Not enough data | 
| **Concurrent Calling** | Not enough data | 8.9 (184 reviews) ✓ Verified | 8.8 (174 reviews) | Not enough data | 
| **Speech Analytics** | Not enough data | Feature Not Available | 8.1 (171 reviews) | Not enough data | 
| **Auto Dialer** | Not enough data | 8.2 (93 reviews) | 8.2 (169 reviews) | Not enough data | 
| **IVR** | Not enough data | 9.1 (117 reviews) | 8.5 (176 reviews) | Not enough data | 
| **Inbound Screen Pop** | Not enough data | 8.8 (98 reviews) | 8.5 (169 reviews) | Not enough data | 
| **Persistent Data** | Not enough data | 8.4 (95 reviews) ✓ Verified | 8.4 (165 reviews) | Not enough data | 

#### Agentic AI - Contact Center

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.3 (13 reviews) | 8.8 (11 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 7.0 (18 reviews) | 9.2 (11 reviews) | Not enough data | 
| **Natural Language Interaction** | Not enough data | 6.9 (12 reviews) | 9.2 (11 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | 6.9 (12 reviews) | 9.2 (11 reviews) | Not enough data | 

#### Administrative

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Session Summary Notes** | Not enough data | 8.3 (149 reviews) ✓ Verified | 8.3 (167 reviews) | Not enough data | 
| **Administrator Access** | Not enough data | 9.0 (179 reviews) ✓ Verified | 9.1 (176 reviews) | Not enough data | 
| **Reporting & Dashboards** | Not enough data | 8.4 (185 reviews) ✓ Verified | 8.9 (176 reviews) | Not enough data | 
| **Session Recording** | Not enough data | 9.0 (114 reviews) | 8.4 (166 reviews) | Not enough data | 
| **Agent Scheduling and Assignment** | Not enough data | 8.3 (103 reviews) ✓ Verified | 8.3 (160 reviews) | Not enough data | 

### Unified Workspaces

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 8.3/10 | 1025 |

#### Login Options 

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Single Sign-On (SSO)** | Not enough data | Not enough data | Not enough data | 9.1 (774 reviews) | 
| **Password Saver** | Not enough data | Not enough data | Not enough data | 8.5 (737 reviews) | 

#### Productivity

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Email Client** | Not enough data | Not enough data | Not enough data | 8.0 (727 reviews) | 
| **Split Screen** | Not enough data | Not enough data | Not enough data | 8.3 (730 reviews) | 
| **Activity Feed** | Not enough data | Not enough data | Not enough data | 8.6 (739 reviews) | 
| **Virtual Assistant** | Not enough data | Not enough data | Not enough data | 7.8 (712 reviews) | 
| **Analytics and Reporting** | Not enough data | Not enough data | Not enough data | 7.9 (706 reviews) | 

#### Customization 

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Custom Workflows** | Not enough data | Not enough data | Not enough data | 8.6 (736 reviews) | 
| **Multiple Workspaces** | Not enough data | Not enough data | Not enough data | 9.0 (755 reviews) | 
| **Custom Application Integration** | Not enough data | Not enough data | Not enough data | 8.7 (718 reviews) | 

#### Agentic AI - Unified Workspaces

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 7.5 (403 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 7.6 (400 reviews) | 

### Enterprise Search Software

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 9.0/10 | 142 |

#### Compatibility

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Federated Search** | Not enough data | Not enough data | Not enough data | 9.0 (96 reviews) | 
| **File Types** | Not enough data | Not enough data | Not enough data | 9.0 (98 reviews) | 
| **Global Language Support** | Not enough data | Not enough data | Not enough data | 8.9 (88 reviews) | 

#### Agentic AI - Enterprise Search Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 8.4 (57 reviews) | 
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 8.3 (54 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 8.9 (55 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 8.5 (55 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 8.5 (55 reviews) | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 8.6 (54 reviews) | 

#### Search Queries

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Typo Tolerance** | Not enough data | Not enough data | Not enough data | 8.8 (92 reviews) | 
| **Faceted Search** | Not enough data | Not enough data | Not enough data | 9.0 (94 reviews) | 
| **Synonyms** | Not enough data | Not enough data | Not enough data | 8.7 (88 reviews) | 
| **Highlighting** | Not enough data | Not enough data | Not enough data | 9.1 (90 reviews) | 
| **Natural Language** | Not enough data | Not enough data | Not enough data | 8.9 (88 reviews) | 

#### AI powered search - Enterprise Search Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Generative RAG (Retrieval augmented generation)** | Not enough data | Not enough data | Not enough data | 9.0 (21 reviews) | 
| **Relevance Tuning** | Not enough data | Not enough data | Not enough data | 9.1 (21 reviews) | 
| **NLP & Semantic search** | Not enough data | Not enough data | Not enough data | 9.0 (21 reviews) | 

#### Functionality

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Personalization** | Not enough data | Not enough data | Not enough data | 8.8 (87 reviews) | 
| **Search Analytics** | Not enough data | Not enough data | Not enough data | 8.9 (88 reviews) | 
| **Integrations** | Not enough data | Not enough data | Not enough data | 9.1 (94 reviews) | 

#### Compatibility - Enterprise Search Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **File Types** | Not enough data | Not enough data | Not enough data | 9.3 (23 reviews) | 
| **Federated Search** | Not enough data | Not enough data | Not enough data | 9.2 (21 reviews) | 
| **Global Language Support** | Not enough data | Not enough data | Not enough data | 9.2 (22 reviews) | 

#### Functionality - Enterprise Search Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Personalization** | Not enough data | Not enough data | Not enough data | 9.2 (23 reviews) | 
| **Search Analytics** | Not enough data | Not enough data | Not enough data | 9.0 (21 reviews) | 
| **Integrations** | Not enough data | Not enough data | Not enough data | 9.4 (24 reviews) | 

#### Search Queries - Enterprise Search Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Highlighting** | Not enough data | Not enough data | Not enough data | 9.4 (21 reviews) | 
| **Faceted Search** | Not enough data | Not enough data | Not enough data | 9.1 (20 reviews) | 
| **Typo Tolerance** | Not enough data | Not enough data | Not enough data | 9.0 (22 reviews) | 
| **Synonyms** | Not enough data | Not enough data | Not enough data | 9.3 (22 reviews) | 

### Work Management

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 8.5/10 | 2649 |

#### Automation

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Workflows** | Not enough data | Not enough data | Not enough data | 8.9 (1249 reviews) | 
| **Customization** | Not enough data | Not enough data | Not enough data | 8.8 (1204 reviews) | 
| **Data repository** | Not enough data | Not enough data | Not enough data | 8.5 (1179 reviews) | 

#### Administration

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Permissions** | Not enough data | Not enough data | Not enough data | 8.8 (1198 reviews) | 
| **Procedures** | Not enough data | Not enough data | Not enough data | 8.6 (1133 reviews) | 
| **Remote Work** | Not enough data | Not enough data | Not enough data | 9.4 (1370 reviews) | 

#### Project management

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Task Prioritization** | Not enough data | Not enough data | Not enough data | 8.7 (1168 reviews) | 
| **Dependencies** | Not enough data | Not enough data | Not enough data | 8.5 (1115 reviews) | 
| **Planning** | Not enough data | Not enough data | Not enough data | 8.6 (1139 reviews) | 
| **Views** | Not enough data | Not enough data | Not enough data | 8.5 (1128 reviews) | 
| **Scheduling** | Not enough data | Not enough data | Not enough data | 8.6 (1138 reviews) | 
| **Critical Path** | Not enough data | Not enough data | Not enough data | 8.3 (1094 reviews) | 
| **Dashboards** | Not enough data | Not enough data | Not enough data | 8.3 (1121 reviews) | 

#### Workload

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Resource Allocation** | Not enough data | Not enough data | Not enough data | 8.4 (1077 reviews) | 
| **Workspace** | Not enough data | Not enough data | Not enough data | 8.8 (1171 reviews) | 
| **Configuration** | Not enough data | Not enough data | Not enough data | 8.6 (1092 reviews) | 
| **Insights** | Not enough data | Not enough data | Not enough data | 8.5 (1088 reviews) | 

#### Communication & Collaboration

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Communication Channels** | Not enough data | Not enough data | Not enough data | 9.4 (1800 reviews) | 
| **Document Management** | Not enough data | Not enough data | Not enough data | 9.0 (1344 reviews) | 
| **Collaboration** | Not enough data | Not enough data | Not enough data | 9.4 (1528 reviews) | 

#### Cost Management

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Project Budgeting** | Not enough data | Not enough data | Not enough data | 8.0 (1069 reviews) | 
| **Time & Expense** | Not enough data | Not enough data | Not enough data | 8.2 (1070 reviews) | 
| **Profitability** | Not enough data | Not enough data | Not enough data | 8.1 (1064 reviews) | 

#### Integration

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Front Office** | Not enough data | Not enough data | Not enough data | 8.7 (1278 reviews) | 
| **Back Office** | Not enough data | Not enough data | Not enough data | 8.4 (1082 reviews) | 
| **External data** | Not enough data | Not enough data | Not enough data | 8.4 (1091 reviews) | 

#### Generative AI

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 7.5 (1026 reviews) | 
| **AI Text Summarization** | Not enough data | Not enough data | Not enough data | 7.7 (1048 reviews) | 

#### Agentic AI - Work Management

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 7.7 (519 reviews) | 
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 7.8 (511 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 8.2 (548 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 7.8 (516 reviews) | 

### Project Collaboration

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 8.5/10 | 1656 |

#### Communication

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Chat** | Not enough data | Not enough data | Not enough data | 9.5 (1193 reviews) | 
| **Discussions** | Not enough data | Not enough data | Not enough data | 9.4 (1149 reviews) | 
| **External** | Not enough data | Not enough data | Not enough data | 8.8 (1056 reviews) | 
| **Feedback** | Not enough data | Not enough data | Not enough data | 8.9 (1036 reviews) | 
| **Announcements** | Not enough data | Not enough data | Not enough data | 9.1 (1049 reviews) | 

#### Content & Documents

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **File Sharing** | Not enough data | Not enough data | Not enough data | 9.2 (1111 reviews) | 
| **Notes** | Not enough data | Not enough data | Not enough data | 8.9 (1045 reviews) | 
| **Search** | Not enough data | Not enough data | Not enough data | 8.7 (1072 reviews) | 
| **Versioning** | Not enough data | Not enough data | Not enough data | 8.1 (1001 reviews) | 

#### Controls

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Custom Views** | Not enough data | Not enough data | Not enough data | 8.3 (987 reviews) | 
| **Followers** | Not enough data | Not enough data | Not enough data | 8.1 (982 reviews) | 
| **User Management** | Not enough data | Not enough data | Not enough data | 8.7 (997 reviews) | 
| **Calendars** | Not enough data | Not enough data | Not enough data | 8.4 (1005 reviews) | 
| **Public Sharing** | Not enough data | Not enough data | Not enough data | 8.2 (972 reviews) | 

#### Project Management

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Task Management** | Not enough data | Not enough data | Not enough data | 8.4 (1000 reviews) | 
| **Planning** | Not enough data | Not enough data | Not enough data | 8.3 (974 reviews) | 
| **Visibility** | Not enough data | Not enough data | Not enough data | 8.5 (980 reviews) | 
| **Integration** | Not enough data | Not enough data | Not enough data | 8.7 (993 reviews) | 

#### Remote Collaboration

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Alignment** | Not enough data | Not enough data | Not enough data | 9.0 (995 reviews) | 
| **Accountability** | Not enough data | Not enough data | Not enough data | 8.7 (968 reviews) | 
| **Connectivity** | Not enough data | Not enough data | Not enough data | 9.0 (988 reviews) | 
| **Offline Mode** | Not enough data | Not enough data | Not enough data | 7.8 (952 reviews) | 

#### Generative AI

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 7.3 (924 reviews) | 
| **AI Text Summarization** | Not enough data | Not enough data | Not enough data | 7.4 (928 reviews) | 

#### Agentic AI - Project Collaboration

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 7.5 (435 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 7.7 (439 reviews) | 

### Video Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | 8.8/10 | 10384 |
| **3CX** | 9.0/10 | 144 |
| **Nextiva** | N/A | N/A |
| **Slack** | N/A | N/A |

#### Collaboration Tools

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Screen Sharing** | 9.0 (8139 reviews) ✓ Verified | 8.8 (68 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Presentations** | 9.1 (5751 reviews) ✓ Verified | 9.1 (37 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Whiteboarding** | Feature Not Available | 9.0 (33 reviews) | Not enough data | Not enough data | 
| **Live Chat** | 9.2 (6388 reviews) ✓ Verified | 9.2 (38 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Hand Raising** | Feature Not Available | 8.5 (34 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Meeting Coordination

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Scheduling** | 9.0 (7835 reviews) ✓ Verified | 8.4 (71 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Recording** | 8.9 (7037 reviews) ✓ Verified | 9.1 (67 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Participant Permissions** | 8.8 (7203 reviews) ✓ Verified | 9.2 (69 reviews) ✓ Verified | Not enough data | Not enough data | 
| **One-Click Join** | 8.9 (5685 reviews) ✓ Verified | 8.9 (41 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Software Type

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Mobile** | 8.8 (7325 reviews) ✓ Verified | 9.0 (82 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Browser Application** | 8.7 (5320 reviews) ✓ Verified | 9.3 (45 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Desktop Application** | 9.1 (5986 reviews) ✓ Verified | 9.2 (43 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Agentic AI - Video Conferencing

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | 7.8 (705 reviews) | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | 7.9 (708 reviews) | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | 7.9 (670 reviews) | Not enough data | Not enough data | Not enough data | 

### Call Center Infrastructure (CCI)

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | 8.7/10 | 54 |
| **Nextiva** | 8.6/10 | 772 |
| **Slack** | N/A | N/A |

#### Platform

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Omnichannel** | Not enough data | 7.7 (40 reviews) | 8.1 (466 reviews) | Not enough data | 
| **Mobile Access** | Not enough data | 8.9 (48 reviews) | 8.6 (667 reviews) | Not enough data | 
| **Queue Management** | Not enough data | 9.1 (46 reviews) | 8.6 (585 reviews) | Not enough data | 
| **Call Routing** | Not enough data | 8.8 (49 reviews) | 8.9 (693 reviews) | Not enough data | 
| **Call Back** | Not enough data | 8.9 (47 reviews) | 8.8 (606 reviews) | Not enough data | 
| **IVR** | Not enough data | 9.2 (42 reviews) | 8.3 (502 reviews) | Not enough data | 
| **Automatic Call Distribution** | Not enough data | 9.1 (46 reviews) | 8.6 (604 reviews) | Not enough data | 

#### Generative AI

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **AI Text-to-Speech** | Not enough data | 6.8 (14 reviews) | 7.7 (295 reviews) | Not enough data | 

#### Workforce Management

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Call Monitoring** | Not enough data | 9.2 (48 reviews) | 8.7 (607 reviews) | Not enough data | 
| **Performance Evaluation** | Not enough data | 8.7 (47 reviews) | 8.7 (565 reviews) | Not enough data | 

#### Call Center Infrastructure (CCI)

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 8.8 (8 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | 8.8 (8 reviews) | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | 8.8 (8 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | 8.8 (8 reviews) | Not enough data | 

#### Administrative

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Call Recording** | Not enough data | 9.1 (49 reviews) | 8.7 (594 reviews) | Not enough data | 
| **Reporting & Dashboards** | Not enough data | 8.5 (48 reviews) | 8.7 (624 reviews) | Not enough data | 

### Live Chat

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | 8.5/10 | 57 |
| **Nextiva** | N/A | N/A |
| **Slack** | N/A | N/A |

#### Generative AI

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **AI Text Generation** | Not enough data | 6.3 (10 reviews) | Not enough data | Not enough data | 
| **AI Text Summarization** | Not enough data | 7.2 (9 reviews) | Not enough data | Not enough data | 
| **AI Text-to-Speech** | Not enough data | 7.4 (9 reviews) | Not enough data | Not enough data | 

#### Communication

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Pop-up Chat** | Not enough data | 9.3 (37 reviews) | Not enough data | Not enough data | 
| **Notifications** | Not enough data | 9.3 (38 reviews) | Not enough data | Not enough data | 
| **Targeted Emails** | Not enough data | Feature Not Available | Not enough data | Not enough data | 
| **In-App Messaging** | Not enough data | 9.3 (37 reviews) | Not enough data | Not enough data | 
| **Co-Browsing** | Not enough data | Feature Not Available | Not enough data | Not enough data | 

####  Internal Use

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Customization ** | Not enough data | 8.9 (43 reviews) | Not enough data | Not enough data | 
| **Conversation Archiving** | Not enough data | 8.9 (37 reviews) | Not enough data | Not enough data | 
| **Lead Development** | Not enough data | Feature Not Available | Not enough data | Not enough data | 
| **Knowledge Base** | Not enough data | Feature Not Available | Not enough data | Not enough data | 
| **Team Inbox ** | Not enough data | 8.9 (36 reviews) | Not enough data | Not enough data | 
| **Customer Profiles** | Not enough data | 9.0 (34 reviews) | Not enough data | Not enough data | 

### Cloud PBX Platforms

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | 8.7/10 | 27 |
| **Nextiva** | 9.1/10 | 43 |
| **Slack** | N/A | N/A |

#### Basic Communication - Cloud PBX

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Call Management** | Not enough data | 9.7 (24 reviews) | 9.4 (31 reviews) | Not enough data | 
| **Communication Management** | Not enough data | 8.9 (21 reviews) | 9.1 (30 reviews) | Not enough data | 
| **Scalability** | Not enough data | 9.7 (21 reviews) | 9.3 (28 reviews) | Not enough data | 
| **Integrations** | Not enough data | 8.3 (22 reviews) | 8.5 (24 reviews) | Not enough data | 
| **Mobile Accessibility** | Not enough data | 9.6 (23 reviews) | 8.7 (31 reviews) | Not enough data | 
| **Accessibility** | Not enough data | 9.8 (23 reviews) | 9.0 (28 reviews) | Not enough data | 

#### Advanced Features - Cloud PBX

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Security and Compliance** | Not enough data | 8.5 (20 reviews) | 9.1 (26 reviews) | Not enough data | 
| **Analytics and Reporting** | Not enough data | 7.6 (21 reviews) | 9.3 (29 reviews) | Not enough data | 
| **Support and Reliability** | Not enough data | 8.0 (22 reviews) | 9.1 (30 reviews) | Not enough data | 
| **Automated attendant** | Not enough data | 7.0 (21 reviews) | 9.1 (27 reviews) | Not enough data | 

### VoIP Providers

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | 8.5/10 | 280 |
| **Nextiva** | 8.3/10 | 1792 |
| **Slack** | N/A | N/A |

#### Platform Basics - VoIP Providers

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **PBX systems, VoIP Softphone** | Not enough data | 9.3 (20 reviews) | 8.7 (66 reviews) | Not enough data | 
| **Call Management** | Not enough data | 9.6 (19 reviews) | 8.8 (93 reviews) | Not enough data | 
| **Network monitoring** | Not enough data | 8.4 (19 reviews) | 8.2 (58 reviews) | Not enough data | 
| **Integrations** | Not enough data | 9.0 (19 reviews) | 8.1 (67 reviews) | Not enough data | 
| **Virtual PBX** | Not enough data | 9.1 (19 reviews) | 7.9 (54 reviews) | Not enough data | 
| **SIP trunking services** | Not enough data | 9.3 (19 reviews) | 7.7 (53 reviews) | Not enough data | 

#### Basic Communication

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Phone Calls** | Not enough data | 9.5 (193 reviews) ✓ Verified | 9.2 (1697 reviews) ✓ Verified | Not enough data | 
| **Video Calls** | Not enough data | 8.4 (133 reviews) ✓ Verified | 7.9 (899 reviews) ✓ Verified | Not enough data | 
| **Instant Messaging** | Not enough data | 8.3 (132 reviews) ✓ Verified | 8.3 (1057 reviews) ✓ Verified | Not enough data | 
| **Screen Sharing** | Not enough data | 8.2 (118 reviews) ✓ Verified | 7.7 (830 reviews) | Not enough data | 
| **Conference Calls** | Not enough data | 8.8 (174 reviews) ✓ Verified | 8.6 (1161 reviews) ✓ Verified | Not enough data | 
| **Desk-to-Desk Calls** | Not enough data | 9.4 (186 reviews) ✓ Verified | 9.1 (1340 reviews) ✓ Verified | Not enough data | 

#### Agentic AI - VoIP Providers

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.1 (9 reviews) | 7.7 (41 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 7.7 (8 reviews) | 7.8 (40 reviews) | Not enough data | 
| **Adaptive Learning** | Not enough data | 6.9 (8 reviews) | 7.6 (39 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | 6.9 (8 reviews) | 7.6 (40 reviews) | Not enough data | 

#### Access

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Software Pairing** | Not enough data | 8.4 (117 reviews) ✓ Verified | 8.0 (903 reviews) | Not enough data | 
| **Browser Extension** | Not enough data | 8.5 (154 reviews) ✓ Verified | 8.1 (898 reviews) | Not enough data | 
| **Individual Download** | Not enough data | 8.4 (164 reviews) ✓ Verified | 8.5 (1040 reviews) ✓ Verified | Not enough data | 

#### Advanced Features

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Hold Music** | Not enough data | 8.5 (173 reviews) ✓ Verified | 8.3 (1174 reviews) ✓ Verified | Not enough data | 
| **Automated Attendants** | Not enough data | 9.0 (161 reviews) ✓ Verified | 8.6 (1244 reviews) ✓ Verified | Not enough data | 
| **VOiP Number** | Not enough data | Feature Not Available | 9.1 (1492 reviews) | Not enough data | 

### AI Voice Assistants

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | N/A | N/A |

#### Voice Recognition - AI Voice Assistants

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Voice Recognition** | Not enough data | Not enough data | Not enough data | Not enough data | 

#### Speech Synthesis - AI Voice Assistants

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Speech Synthesis** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Customizable speech** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Multiple voice actions** | Not enough data | Not enough data | Not enough data | Not enough data | 

#### Security and privacy - AI Voice Assistants

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Encrypted communication** | Not enough data | Not enough data | Not enough data | Not enough data | 

#### Compatibility - AI Voice Assistants

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Cross platform compatibility** | Not enough data | Not enough data | Not enough data | Not enough data | 

### Audio Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 7.6/10 | 349 |

#### Agentic AI - Audio Conferencing

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 7.5 (277 reviews) | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 7.7 (278 reviews) | 

### UCaaS Platforms

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | 9.2/10 | 74 |
| **Nextiva** | 8.6/10 | 203 |
| **Slack** | N/A | N/A |

#### Agentic AI - UCaaS Platforms

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 8.1 (7 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | 8.1 (7 reviews) | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | 8.3 (8 reviews) | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | 8.6 (7 reviews) | Not enough data | 

#### Extensions

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Tenancy Flexibility** | Not enough data | Feature Not Available | 8.5 (149 reviews) ✓ Verified | Not enough data | 
| **Native VoIP** | Not enough data | 9.7 (24 reviews) ✓ Verified | 9.1 (159 reviews) ✓ Verified | Not enough data | 
| **CCaaS Option** | Not enough data | 9.0 (22 reviews) ✓ Verified | 8.8 (147 reviews) ✓ Verified | Not enough data | 

#### Features

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Voicemail to Email** | Not enough data | 9.4 (24 reviews) ✓ Verified | 9.2 (185 reviews) ✓ Verified | Not enough data | 
| **Voicemail to SMS** | Not enough data | Feature Not Available | 8.5 (154 reviews) | Not enough data | 
| **File Sharing** | Not enough data | 8.7 (18 reviews) ✓ Verified | 8.3 (142 reviews) ✓ Verified | Not enough data | 
| **Voice Conferencing** | Not enough data | 9.4 (28 reviews) ✓ Verified | 9.0 (156 reviews) ✓ Verified | Not enough data | 
| **Video Conferencing** | Not enough data | 8.6 (27 reviews) ✓ Verified | 8.4 (146 reviews) ✓ Verified | Not enough data | 
| **Conference Transcripts** | Not enough data | Feature Not Available | Feature Not Available | Not enough data | 

### AI Note-Taking Software

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | 8.6/10 | 207 |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | 9.1/10 | 30 |

#### Action Item Detection - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Action Item extraction** | 8.6 (117 reviews) | Not enough data | Not enough data | 8.9 (12 reviews) | 
| **Summary Generation** | 8.9 (130 reviews) | Not enough data | Not enough data | 9.2 (12 reviews) | 

#### Automatic Transcription - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Speech-to-text Transcription** | 8.8 (130 reviews) | Not enough data | Not enough data | 9.5 (14 reviews) | 

#### Collaboration & Sharing - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Team-based Access** | 8.7 (128 reviews) | Not enough data | Not enough data | 9.4 (13 reviews) | 

#### Language & Accent Support - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Multi-Language and Accent Support** | 8.2 (115 reviews) | Not enough data | Not enough data | 9.2 (13 reviews) | 

#### Multi-Platform Integration - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Integrations** | 8.4 (123 reviews) | Not enough data | Not enough data | 9.0 (14 reviews) | 

#### Privacy & Security Controls - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Access Control** | 8.7 (117 reviews) | Not enough data | Not enough data | 8.9 (14 reviews) | 

#### Searchable Note Archives - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Semantic Search** | 8.2 (107 reviews) | Not enough data | Not enough data | 8.8 (12 reviews) | 

#### Speaker Identification - AI Note-taking Software

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Speaker Recognition** | 8.7 (124 reviews) | Not enough data | Not enough data | 9.2 (14 reviews) | 

### Knowledge Management

| Product | Score | Reviews |
|---|---|---|
| **Microsoft Teams** | N/A | N/A |
| **3CX** | N/A | N/A |
| **Nextiva** | N/A | N/A |
| **Slack** | N/A | N/A |

#### Knowledge Base

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Q & A** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Link Sharing** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Searchable** | Not enough data | Not enough data | Not enough data | Not enough data | 

#### Security

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Verification** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Role-Based Permission** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Public vs Private** | Not enough data | Not enough data | Not enough data | Not enough data | 

#### Content

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Trackable Analytics** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Import** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **File Viewing** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Update Notifications** | Not enough data | Not enough data | Not enough data | Not enough data | 

#### Communication

| Feature | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Social Features** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Tagging ** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Upload ** | Not enough data | Not enough data | Not enough data | Not enough data | 
| **Comments** | Not enough data | Not enough data | Not enough data | Not enough data | 

---
## Categories

**Unique to Microsoft Teams (3):** [Business Instant Messaging Software](https://www.g2.com/categories/business-instant-messaging), [Video Conferencing Software](https://www.g2.com/categories/video-conferencing), [AI Note-Taking Software](https://www.g2.com/categories/ai-note-taking-software)

**Unique to 3CX (7):** [UCaaS Platforms](https://www.g2.com/categories/ucaas-platforms), [Live Chat Software](https://www.g2.com/categories/live-chat), [VoIP Providers](https://www.g2.com/categories/voip-providers), [Contact Center Software](https://www.g2.com/categories/contact-center), [Video Conferencing Software](https://www.g2.com/categories/video-conferencing), [Call Center Infrastructure (CCI) Software](https://www.g2.com/categories/call-center-infrastructure-cci), [Cloud PBX Platforms Software](https://www.g2.com/categories/cloud-pbx-platforms)

**Unique to Nextiva (6):** [UCaaS Platforms](https://www.g2.com/categories/ucaas-platforms), [AI Voice Assistants](https://www.g2.com/categories/ai-voice-assistants), [Contact Center Software](https://www.g2.com/categories/contact-center), [VoIP Providers](https://www.g2.com/categories/voip-providers), [Call Center Infrastructure (CCI) Software](https://www.g2.com/categories/call-center-infrastructure-cci), [Cloud PBX Platforms Software](https://www.g2.com/categories/cloud-pbx-platforms)

**Unique to Slack (10):** [Knowledge Base Software](https://www.g2.com/categories/knowledge-base-software), [Unified Workspaces Software](https://www.g2.com/categories/unified-workspaces), [Work Management Software](https://www.g2.com/categories/work-management), [Enterprise Search Software](https://www.g2.com/categories/enterprise-search-software), [Q&A Platforms ](https://www.g2.com/categories/q-a-platforms), [AI Note-Taking Software](https://www.g2.com/categories/ai-note-taking-software), [Business Instant Messaging Software](https://www.g2.com/categories/business-instant-messaging), [Project Collaboration Software](https://www.g2.com/categories/project-collaboration), [Workflow Management Software](https://www.g2.com/categories/workflow-management), [Audio Conferencing Software](https://www.g2.com/categories/audio-conferencing)


---
## Reviewer Demographics

### By Company Size

| Segment | Microsoft Teams | 3CX | Nextiva | Slack | 
|---|---|---|---|---|
| **Small-Business** | 22.1% | 36.2% | 77.3% | 41.0% | 
| **Mid-Market** | 38.4% | 54.9% | 21.5% | 40.7% | 
| **Enterprise** | 39.5% | 8.9% | 1.2% | 18.3% | 

### By Industry

#### Microsoft Teams

- **Information Technology and Services:** 17.2%
- **Computer Software:** 9.3%
- **Financial Services:** 3.7%
- **Education Management:** 3.5%
- **Marketing and Advertising:** 3.5%
- **Higher Education:** 3.3%
- **Hospital & Health Care:** 3.2%
- **Accounting:** 2.5%
- **Telecommunications:** 2.1%
- **Insurance:** 2.0%
- **Other:** 49.7%

#### 3CX

- **Information Technology and Services:** 10.4%
- **Hospital & Health Care:** 5.4%
- **Education Management:** 5.2%
- **Telecommunications:** 4.9%
- **Construction:** 4.2%
- **Computer Software:** 4.0%
- **Financial Services:** 4.0%
- **Computer & Network Security:** 3.8%
- **E-Learning:** 3.5%
- **Insurance:** 3.1%
- **Other:** 51.5%

#### Nextiva

- **Hospital & Health Care:** 6.0%
- **Insurance:** 5.7%
- **Construction:** 5.3%
- **Financial Services:** 4.6%
- **Real Estate:** 3.9%
- **Information Technology and Services:** 3.8%
- **Health, Wellness and Fitness:** 3.8%
- **Medical Practice:** 3.6%
- **Law Practice:** 3.4%
- **Legal Services:** 3.2%
- **Other:** 56.6%

#### Slack

- **Computer Software:** 15.4%
- **Information Technology and Services:** 13.2%
- **Marketing and Advertising:** 8.5%
- **Internet:** 4.6%
- **Financial Services:** 3.4%
- **Education Management:** 3.3%
- **Higher Education:** 3.2%
- **Non-Profit Organization Management:** 2.6%
- **Hospital & Health Care:** 2.1%
- **Retail:** 1.7%
- **Other:** 42.1%

---
## Alternatives

### Alternatives to Microsoft Teams

- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56390 reviews)
- [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (48016 reviews)
- [Webex Suite](https://www.g2.com/products/cisco-webex-suite/reviews) — 4.2/5 stars (18891 reviews)
- [ClickUp](https://www.g2.com/products/clickup/reviews) — 4.6/5 stars (12426 reviews)
- [Otter.ai](https://www.g2.com/products/otter-ai/reviews) — 4.4/5 stars (492 reviews)
- [Rocket.Chat](https://www.g2.com/products/rocket-chat/reviews) — 4.2/5 stars (374 reviews)
- [Zoho Cliq](https://www.g2.com/products/zoho-cliq/reviews) — 4.4/5 stars (267 reviews)
- [Lark](https://www.g2.com/products/lark-lark/reviews) — 4.5/5 stars (179 reviews)
- [GoTo Meeting](https://www.g2.com/products/goto-meeting/reviews) — 4.2/5 stars (17097 reviews)
- [monday Work Management](https://www.g2.com/products/monday-com/reviews) — 4.7/5 stars (15380 reviews)

### Alternatives to 3CX

- [Genesys Cloud CX](https://www.g2.com/products/genesys-cloud-cx/reviews) — 4.4/5 stars (1547 reviews)
- [RingEX](https://www.g2.com/products/ringex/reviews) — 4.2/5 stars (1364 reviews)
- [Webex Calling](https://www.g2.com/products/webex-calling/reviews) — 4.5/5 stars (633 reviews)
- [Dialpad Connect](https://www.g2.com/products/dialpad-connect/reviews) — 4.4/5 stars (4165 reviews)
- [Aircall](https://www.g2.com/products/aircall/reviews) — 4.4/5 stars (1585 reviews)
- [GoTo Connect](https://www.g2.com/products/goto-connect/reviews) — 4.4/5 stars (1414 reviews)
- [Yeastar P-Series PBX System](https://www.g2.com/products/yeastar-p-series-pbx-system/reviews) — 4.8/5 stars (81 reviews)
- [Vonage Business Communications](https://www.g2.com/products/vonage-business-communications/reviews) — 4.3/5 stars (501 reviews)
- [Mitel](https://www.g2.com/products/mitel/reviews) — 3.8/5 stars (235 reviews)
- [Five9 Intelligent Cloud Contact Center Platform](https://www.g2.com/products/five9-intelligent-cloud-contact-center-platform/reviews) — 4.1/5 stars (611 reviews)

### Alternatives to Nextiva

- [Aircall](https://www.g2.com/products/aircall/reviews) — 4.4/5 stars (1585 reviews)
- [RingEX](https://www.g2.com/products/ringex/reviews) — 4.2/5 stars (1364 reviews)
- [GoTo Connect](https://www.g2.com/products/goto-connect/reviews) — 4.4/5 stars (1414 reviews)
- [8x8 Work](https://www.g2.com/products/8x8-work/reviews) — 4.2/5 stars (926 reviews)
- [Vonage Business Communications](https://www.g2.com/products/vonage-business-communications/reviews) — 4.3/5 stars (501 reviews)
- [Genesys Cloud CX](https://www.g2.com/products/genesys-cloud-cx/reviews) — 4.4/5 stars (1547 reviews)
- [Talkdesk](https://www.g2.com/products/talkdesk/reviews) — 4.4/5 stars (2504 reviews)
- [Dialpad Connect](https://www.g2.com/products/dialpad-connect/reviews) — 4.4/5 stars (4165 reviews)
- [Intermedia Unite](https://www.g2.com/products/intermedia-unite/reviews) — 4.5/5 stars (520 reviews)
- [JustCall](https://www.g2.com/products/saas-labs-justcall/reviews) — 4.3/5 stars (2385 reviews)

### Alternatives to Slack

- [ClickUp](https://www.g2.com/products/clickup/reviews) — 4.6/5 stars (12426 reviews)
- [monday Work Management](https://www.g2.com/products/monday-com/reviews) — 4.7/5 stars (15380 reviews)
- [Confluence](https://www.g2.com/products/confluence/reviews) — 4.1/5 stars (4353 reviews)
- [Swit](https://www.g2.com/products/swit/reviews) — 4.7/5 stars (361 reviews)
- [Asana](https://www.g2.com/products/asana/reviews) — 4.4/5 stars (13641 reviews)
- [Wrike](https://www.g2.com/products/wrike/reviews) — 4.2/5 stars (4530 reviews)
- [Smartsheet](https://www.g2.com/products/smartsheet/reviews) — 4.4/5 stars (22097 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56390 reviews)
- [Notion](https://www.g2.com/products/notion/reviews) — 4.6/5 stars (11896 reviews)
- [Bitrix24](https://www.g2.com/products/bitrix24/reviews) — 4.1/5 stars (608 reviews)

---
## Top Discussions

### Microsoft Teams

- Title: [What is the use of Microsoft teams?](https://www.g2.com/discussions/what-is-the-use-of-microsoft-teams) — 19 comments, 6 upvotes
  > **Top comment:** "Collaboration "
- Title: [What software do you need for Microsoft teams?](https://www.g2.com/discussions/what-software-do-you-need-for-microsoft-teams) — 18 comments, 10 upvotes
  > **Top comment:** "To use Microsoft Teams effectively, you typically need the following software and components:

Microsoft Teams Application: You can download and install..."
- Title: [What are Microsoft teams features?](https://www.g2.com/discussions/what-are-microsoft-teams-features) — 12 comments, 4 upvotes
  > **Top comment:** "most used features in my work place
text based chat
video calling
team meetings"
- Title: [Does it integrate with gmail](https://www.g2.com/discussions/15479-does-it-integrate-with-gmail) — 9 comments, 2 upvotes
  > **Top comment:** "No"
- Title: [Is there a way to mute notifcations?](https://www.g2.com/discussions/33039-is-there-a-way-to-mute-notifcations) — 7 comments, 4 upvotes
  > **Top comment:** "If you go to "Channel notifications" in your settings, you can adjust notifications (and turn most of them off). "

### 3CX

- Title: [How do I integrate 3CX to my CRM](https://www.g2.com/discussions/how-do-i-integrate-3cx-to-my-crm) — 2 comments, 1 upvote
  > **Top comment:** "In order to do this there are 2 things you need to do:
1) Make sure you are using either the 3CX WebClient or 3CX Desktop App to make calls
2) Use either..."
- Title: [Getting STUN setup for remote employees has been a challenge during this COVID-19 pandemic.](https://www.g2.com/discussions/25993-getting-stun-setup-for-remote-employees-has-been-a-challenge-during-this-covid-19-pandemic) — 2 comments, 1 upvote
  > **Top comment:** "Hello Tim,

Thank you for your question. As this is a technical issue, I would advise you to open a support ticket with our team, which is available for..."
- Title: [What is 3CX used for?](https://www.g2.com/discussions/what-is-3cx-used-for) — 1 comment, 1 upvote
  > **Top comment:** "Business communication system primarily used for VoIP Phone System"
- Title: [Arabic Support !?](https://www.g2.com/discussions/arabic-support) — 1 comment, 1 upvote
  > **Top comment:** "I am not sure if they support in arabic language but the language has issues in 3cx as it is written from right to left."
- Title: [Teams integration](https://www.g2.com/discussions/34346-teams-integration) — 1 comment, 1 upvote
  > **Top comment:** "www.ring2teams.com/3cx

Let me know if you would like a free trial 

luke@exceltelecom.co.uk"

### Nextiva

- Title: [What is VoIP feature?](https://www.g2.com/discussions/what-is-voip-feature) — 3 comments
  > **Top comment:** "Voip feature just means you can make calls over the internet, rather than a connected phone line or cell network. 
"
- Title: [What does nextiva do?](https://www.g2.com/discussions/what-does-nextiva-do) — 3 comments
  > **Top comment:** "provide phone service"
- Title: [How has Nextiva revolutionized business communication systems with its VoIP solutions?](https://www.g2.com/discussions/how-has-nextiva-revolutionized-business-communication-systems-with-its-voip-solutions) — 2 comments
  > **Top comment:** "From my perspective - Nextiva made everything seamless like it's part of my normal work system/equipment.  I don't feel like I have to do any extra logging..."
- Title: [What is Nextiva used for?](https://www.g2.com/discussions/what-is-nextiva-used-for) — 2 comments
  > **Top comment:** "They are in the business of sneak auto-renewals, being difficult to reach, and deferring everything to their legal department. "
- Title: [For those who switched to Nextiva from another service, whom did you come from, and do you feel there is parity between Nextiva and your previous provider?](https://www.g2.com/discussions/for-those-who-switched-to-nextiva-from-another-service-whom-did-you-come-from-and-do-you-feel-there-is-parity-between-nextiva-and-your-previous-provider) — 2 comments, 1 upvote
  > **Top comment:** "Good day everyone on this platform I wanna use this medium to express how you can recover your lost fund from forex, binary options scam companies or fake..."

### Slack

- Title: [How do I delete a channel in slack?](https://www.g2.com/discussions/10278-how-do-i-delete-a-channel-in-slack) — 47 comments, 8 upvotes
  > **Top comment:** "Currently, Slack has disabled deleting a channel, you can only archive it if you created it."
- Title: [What does slack software do?](https://www.g2.com/discussions/what-does-slack-software-do) — 28 comments, 1 upvote
  > **Top comment:** "Slack is a messaging software perfect for companies, it allows you to create channels (groups), it let's you answer to messages in threads and react to..."
- Title: [What is Slack used for?](https://www.g2.com/discussions/what-is-slack-used-for) — 22 comments, 7 upvotes
  > **Top comment:** "It connect us with the people no matter where we are through messaging and calls."
- Title: [What integrations have you found most effective for streamlining communication in Slack?](https://www.g2.com/discussions/what-integrations-have-you-found-most-effective-for-streamlining-communication-in-slack) — 20 comments, 4 upvotes
  > **Top comment:** "Microsoft Outlook, Google Suite"
- Title: [Is Slack a good tool?](https://www.g2.com/discussions/is-slack-a-good-tool) — 20 comments, 22 upvotes
  > **Top comment:** "Yes it is a good tool. I am using it for a couple of years.  "

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/microsoft-teams-vs-3cx-vs-nextiva-vs-slack)