# Slack vs Viva Engage Comparison


| | Slack | Viva Engage | 
|---|---|---|
| **Star Rating** | 4.5 out of 5 | 3.6 out of 5 | 
| **Total Reviews** | 39,827 | 1,441 | 
| **Largest Market Segment** | Small-Business (40.8% of reviews) | Enterprise (59.6% of reviews) | 
| **Entry Level Price** | $0.00 | No pricing available | 

---
## Top Pros & Cons

### Slack

Pros:
- Ease of Use (3483 reviews)
- Team Collaboration (3031 reviews)

Cons:
- Notification Issues (1114 reviews)
- Missing Features (905 reviews)

### Viva Engage

Pros:
- Ease of Use (3 reviews)
- Sharing Ease (3 reviews)

Cons:
- Distraction (2 reviews)
- Lack of Notifications (2 reviews)

---
## Ratings Comparison
| Rating | Slack | Viva Engage | 
|---|---|---|
  | **Meets Requirements** | 9.2 (31789 reviews) | 7.9 (1264 reviews) | 
  | **Ease of Use** | 9.2 (32971 reviews) | 8.1 (1280 reviews) | 
  | **Ease of Setup** | 9.1 (9254 reviews) | 8.3 (178 reviews) | 
  | **Ease of Admin** | 8.9 (5493 reviews) | 7.7 (166 reviews) | 
  | **Quality of Support** | 8.8 (22145 reviews) | 7.8 (757 reviews) | 
  | **Has the product been a good partner in doing business?** | 9.1 (4976 reviews) | 7.8 (147 reviews) | 
  | **Product Direction (% positive)** | 8.7 (30973 reviews) | 6.0 (1264 reviews) | 

---
## Pricing

### 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

### Viva Engage

#### Entry-Level Pricing

No pricing available

#### Free Trial

No information available

---
## Features Comparison By Category

### Artificial Intelligence

| Product | Score | Reviews |
|---|---|---|
| **Slack** | N/A | N/A |
| **Viva Engage** | N/A | N/A |

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Tagging** | Not enough data | Not enough data | 
| **Natural Language Processing** | Not enough data | Not enough data | 
| **Data Extraction** | Not enough data | Not enough data | 
| **Multi-Language** | Not enough data | Not enough data | 
| **Predictive Analytics** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Speech Recognition** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Data Storage Management** | Not enough data | Not enough data | 
| **Virtual Personal Assistant (VPA)** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Customer Segmentation** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **For eCommerce** | Not enough data | Not enough data | 
| **Role-Based Permissions** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Monitoring** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Data Visualization** | Not enough data | Not enough data | 
| **Trend Analysis** | Not enough data | Not enough data | 
| **Machine Learning** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Alerts/Escalation** | Not enough data | Not enough data | 
| **Performance Metrics** | Not enough data | Not enough data | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Mobile App** | Not enough data | Not enough data | 
| **Multiple Data Sources** | Not enough data | Not enough data | 
| **For Sales Teams/Organizations** | Not enough data | Not enough data | 
| **Sentiment Analysis** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Chatbot** | Not enough data | Not enough data | 
| **Workflow Automation** | Not enough data | Not enough data | 

### Collaboration & Productivity

| Product | Score | Reviews |
|---|---|---|
| **Slack** | N/A | N/A |
| **Viva Engage** | N/A | N/A |

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **To-Do List** | Not enough data | Not enough data | 
| **@mentions** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **File Management** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Prioritization** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Screen Sharing** | Not enough data | Not enough data | 
| **Content Management** | Not enough data | Not enough data | 
| **Brainstorming** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **File Transfer** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Status Tracking** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Version Control** | Not enough data | Not enough data | 
| **Task Management** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Real Time Editing** | Not enough data | Not enough data | 
| **Communication Management** | Not enough data | Not enough data | 
| **Chat/Messaging** | Not enough data | Not enough data | 
| **Tagging** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Assignment Management** | Not enough data | Not enough data | 
| **Task Scheduling** | Not enough data | Not enough data | 
| **Project Management** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Secure Data Storage** | Not enough data | Not enough data | 
| **File Sharing** | Not enough data | Not enough data | 
| **Document Storage** | Not enough data | Not enough data | 
| **Task Progress Tracking** | Not enough data | Not enough data | 
| **Discussions/Forums** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Contact Management** | Not enough data | Not enough data | 
| **Video Conferencing** | Not enough data | Not enough data | 
| **Progress Tracking** | Not enough data | Not enough data | 
| **Mobile Access** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 

### Team Collaboration

| Product | Score | Reviews |
|---|---|---|
| **Slack** | N/A | N/A |
| **Viva Engage** | N/A | N/A |

#### Communication

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Status Updates** | Not enough data | Not enough data | 
| **Instant Messaging** | Not enough data | Not enough data | 
| **Activity Feed** | Not enough data | Not enough data | 
| **Notifications** | Not enough data | Not enough data | 
| **Comments and Voting** | Not enough data | Not enough data | 
| **Discussions** | Not enough data | Not enough data | 
| **User Directory** | Not enough data | Not enough data | 
| **Online Status of Coworkers** | Not enough data | Not enough data | 

#### Content Management

| Feature | Slack | Viva Engage | 
|---|---|---|
| **File Sharing** | Not enough data | Not enough data | 
| **Document Collaboration** | Not enough data | Not enough data | 
| **Version Control** | Not enough data | Not enough data | 
| **Tagging** | Not enough data | Not enough data | 
| **Knowledge Base** | Not enough data | Not enough data | 
| **Surveys** | Not enough data | Not enough data | 

#### Productivity Tools

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Task Management** | Not enough data | Not enough data | 
| **Calendar** | Not enough data | Not enough data | 
| **Search** | Not enough data | Not enough data | 
| **Mobile** | Not enough data | Not enough data | 
| **Multi-Language Support** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **Project Management** | Not enough data | Not enough data | 
| **Content Management** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Email Management** | Not enough data | Not enough data | 
| **Contact Management** | Not enough data | Not enough data | 
| **File Management** | Not enough data | Not enough data | 
| **Meeting Management** | Not enough data | Not enough data | 

#### Administration

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Moderation** | Not enough data | Not enough data | 
| **User, Role, and Access Management** | Not enough data | Not enough data | 
| **Performance and Reliability** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **API** | Not enough data | Not enough data | 
| **@mentions** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Reminders** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Surveys & Feedback** | Not enough data | Not enough data | 
| **Progress Tracking** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Discussions/Forums** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Audio Calls** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Calendar Sync** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 

### Business Instant Messaging

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 8.2/10 | 16152 |
| **Viva Engage** | N/A | N/A |

#### Business Instant Messaging

| Feature | Slack | Viva Engage | 
|---|---|---|
| **File Sharing** | 9.1 (14022 reviews) | Not enough data | 
| **Notifications** | 9.0 (14563 reviews) | Not enough data | 
| **Search** | 8.6 (13843 reviews) | Not enough data | 
| **Screen Sharing** | Not enough data | Not enough data | 
| **Alerts/Notifications** | 6.7 (22 reviews) | Not enough data | 

#### Business Instant Messaging 

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Audio Conferencing** | 8.5 (10271 reviews) | Not enough data | 
| **Video Conferencing** | 8.1 (9603 reviews) | Not enough data | 
| **Two-Way Audio & Video** | Not enough data | Not enough data | 
| **Conferencing** | Not enough data | Not enough data | 

#### Business Instant Messaging

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Mobile Application** | 9.1 (13708 reviews) | Not enough data | 
| **Web Application** | 9.2 (13303 reviews) | Not enough data | 
| **Third-Party Integrations** | 9.0 (11884 reviews) | Not enough data | 
| **Active Directory Integration** | Not enough data | Not enough data | 

#### Generative AI - Business Instant Messaging

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Text Summarization** | 7.5 (1492 reviews) | Not enough data | 

#### AI - Business Instant Messaging

| Feature | Slack | Viva Engage | 
|---|---|---|
| **AI Powered Search** | 7.5 (1467 reviews) | Not enough data | 
| **Smart Notifications** | 7.9 (1477 reviews) | Not enough data | 
| **AI Powered Language Translation** | 7.4 (1448 reviews) | Not enough data | 
| **Content Generation** | 7.4 (1448 reviews) | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 

#### Agentic AI - Business Instant Messaging

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Cross-system Integration** | 7.7 (880 reviews) | Not enough data | 
| **Natural Language Interaction** | 7.7 (862 reviews) | Not enough data | 
| **Multi-Language** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Group Messaging** | 9.4 (9 reviews) | Not enough data | 
| **Bulk Send** | Not enough data | Not enough data | 
| **Meeting Management** | Not enough data | Not enough data | 
| **Mobile Access** | Not enough data | Not enough data | 
| **Rich Text Editor** | Not enough data | Not enough data | 
| **Role-Based Permissions** | Not enough data | Not enough data | 
| **Discussions/Forums** | Not enough data | Not enough data | 
| **Transcripts/Chat History** | Not enough data | Not enough data | 
| **Contact Management** | Not enough data | Not enough data | 
| **User Management** | Not enough data | Not enough data | 
| **Message Recall** | Not enough data | Not enough data | 
| **Canned Responses** | Not enough data | Not enough data | 
| **Document Storage** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Multi-Channel Communication** | Not enough data | Not enough data | 
| **Workflow Configuration** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Task Management** | Not enough data | Not enough data | 
| **Reminders** | Not enough data | Not enough data | 
| **Read Receipts** | Not enough data | Not enough data | 
| **@mentions** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Real-Time Chat** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Email Management** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Secure Data Storage** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Broadcast Messaging** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Employee Database** | Not enough data | Not enough data | 
| **One-to-One Messaging** | Not enough data | Not enough data | 
| **Event Calendar** | Not enough data | Not enough data | 
| **Tagging** | Not enough data | Not enough data | 
| **Customizable Templates** | Not enough data | Not enough data | 
| **Real-Time Updates** | Not enough data | Not enough data | 
| **Employee Photos** | Not enough data | Not enough data | 
| **Mobile Alerts** | Not enough data | Not enough data | 
| **Engagement Tracking** | Not enough data | Not enough data | 
| **Blogs** | Not enough data | Not enough data | 

### Workflow Management

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 8.4/10 | 932 |
| **Viva Engage** | N/A | N/A |

#### Setup

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Activities** | 9.1 (683 reviews) | Not enough data | 
| **Flows** | 8.9 (680 reviews) | Not enough data | 
| **Dependencies** | 8.7 (651 reviews) | Not enough data | 
| **Notifications** | 8.9 (698 reviews) | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Business Process Automation** | Not enough data | Not enough data | 

#### Management

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Updates** | 9.0 (668 reviews) | Not enough data | 
| **Audit Trail** | 8.7 (644 reviews) | Not enough data | 
| **Integration** | 8.9 (670 reviews) | Not enough data | 

#### Generative AI

| Feature | Slack | Viva Engage | 
|---|---|---|
| **AI Text Generation** | 7.7 (557 reviews) | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 

#### Agentic AI - Workflow Management

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

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Drag & Drop** | Not enough data | Not enough data | 
| **Template Management** | Not enough data | Not enough data | 
| **Approval Process Control** | Not enough data | Not enough data | 
| **Customizable Dashboard** | Not enough data | Not enough data | 
| **Rules-Based Workflow** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **Monitoring** | Not enough data | Not enough data | 
| **Progress Tracking** | Not enough data | Not enough data | 
| **Workflow Configuration** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Task Management** | Not enough data | Not enough data | 
| **Forms Management** | Not enough data | Not enough data | 
| **No-Code** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Email Management** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Graphical Workflow Editor** | Not enough data | Not enough data | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Mobile Access** | Not enough data | Not enough data | 
| **Customizable Fields** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Compliance Tracking** | Not enough data | Not enough data | 
| **Role-Based Permissions** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **Project Workflow** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 

### Q&A Platforms

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 8.9/10 | 423 |
| **Viva Engage** | N/A | N/A |

#### Account Options

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Single Sign-On (SSO)** | 9.2 (289 reviews) | Not enough data | 
| **Social Login** | 8.4 (279 reviews) | Not enough data | 
| **Reputation System** | 8.6 (269 reviews) | Not enough data | 
| **Topic Subscription** | 8.7 (276 reviews) | Not enough data | 
| **Bookmarking** | 8.9 (286 reviews) | Not enough data | 
| **History** | 8.9 (282 reviews) | Not enough data | 

#### Q&A Tools

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Tags** | 9.1 (288 reviews) | Not enough data | 
| **Commenting System** | 9.1 (281 reviews) | Not enough data | 
| **Notifications** | 9.1 (290 reviews) | Not enough data | 
| **Voting** | 8.7 (273 reviews) | Not enough data | 
| **Integrations** | 9.1 (285 reviews) | Not enough data | 
| **Knowledge Integrations** | 8.9 (273 reviews) | Not enough data | 
| **Embedding** | 8.6 (267 reviews) | Not enough data | 
| **Formatting** | 8.9 (271 reviews) | Not enough data | 
| **Analytics** | 8.5 (266 reviews) | Not enough data | 

### Knowledge Base

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 8.4/10 | 517 |
| **Viva Engage** | N/A | N/A |

#### Knowledge Pages

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Templates** | 8.4 (343 reviews) | Not enough data | 
| **In-Content Feedback** | 8.3 (343 reviews) | Not enough data | 
| **Versioning and Version History** | 8.1 (331 reviews) | Not enough data | 
| **Decision Trees** | 8.1 (328 reviews) | Not enough data | 
| **Duplicate Detection** | 7.9 (323 reviews) | Not enough data | 
| **Content Editor** | 8.3 (328 reviews) | Not enough data | 
| **WYSIWYG Editor** | Not enough data | Not enough data | 
| **Rich Text Editor** | Not enough data | Not enough data | 
| **Drag & Drop Editor** | Not enough data | Not enough data | 
| **Customizable Templates** | Not enough data | Not enough data | 
| **Surveys & Feedback** | Not enough data | Not enough data | 
| **Pre-built Templates** | Not enough data | Not enough data | 

#### Knowledge Dissemination

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Page Analytics** | 8.2 (319 reviews) | Not enough data | 
| **Permissions** | 8.7 (327 reviews) | Not enough data | 
| **Knowledge Sharing** | 9.0 (338 reviews) | Not enough data | 
| **Notifications** | 8.9 (336 reviews) | Not enough data | 
| **Advanced Search** | 8.3 (330 reviews) | Not enough data | 
| **Browser Extension** | 8.2 (317 reviews) | Not enough data | 
| **Organization** | 8.7 (333 reviews) | Not enough data | 
| **Other Integrations** | 8.6 (325 reviews) | Not enough data | 
| **Knowledge Integrations** | 8.6 (313 reviews) | Not enough data | 
| **Full Text Search** | Not enough data | Not enough data | 
| **Web Notifications** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Website Integration** | Not enough data | Not enough data | 
| **Social Media Integration** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 

#### Agentic AI - Knowledge Base

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Adaptive Learning** | 7.9 (196 reviews) | Not enough data | 
| **Natural Language Interaction** | 7.9 (198 reviews) | Not enough data | 
| **Proactive Assistance** | 7.8 (196 reviews) | Not enough data | 
| **Multi-Language** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Search/Filter** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Content Publishing Options** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Content Library** | Not enough data | Not enough data | 
| **Document Classification** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **SEO Management** | Not enough data | Not enough data | 
| **Real-Time Reporting** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Self Service Portal** | Not enough data | Not enough data | 
| **Widgets** | Not enough data | Not enough data | 
| **Mobile Interface** | Not enough data | Not enough data | 
| **Catalog Management** | Not enough data | Not enough data | 
| **Online Forums** | Not enough data | Not enough data | 
| **Email Alerts** | Not enough data | Not enough data | 
| **Collaboration Tools** | 10.0 (5 reviews) | Not enough data | 
| **Mobile Alerts** | Not enough data | Not enough data | 
| **Dashboard** | Not enough data | Not enough data | 
| **Feedback Management** | Not enough data | Not enough data | 
| **Document Storage** | Not enough data | Not enough data | 
| **User Management** | Not enough data | Not enough data | 
| **Live Chat** | Not enough data | Not enough data | 
| **Chatbot** | Not enough data | Not enough data | 
| **Knowledge Management** | Not enough data | Not enough data | 
| **Wiki** | Not enough data | Not enough data | 
| **Text Editing** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Customizable Fields** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Content Management** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Knowledge Base Management** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Discussions/Forums** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Communication Management** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 

### Unified Workspaces

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 8.3/10 | 1054 |
| **Viva Engage** | N/A | N/A |

#### Login Options 

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Single Sign-On (SSO)** | 9.1 (777 reviews) | Not enough data | 
| **Password Saver** | 8.5 (736 reviews) | Not enough data | 

#### Productivity

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Email Client** | 8.0 (724 reviews) | Not enough data | 
| **Split Screen** | 8.3 (735 reviews) | Not enough data | 
| **Activity Feed** | 8.6 (741 reviews) | Not enough data | 
| **Virtual Assistant** | 7.9 (717 reviews) | Not enough data | 
| **Analytics and Reporting** | 7.9 (707 reviews) | Not enough data | 

#### Customization 

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Custom Workflows** | 8.6 (737 reviews) | Not enough data | 
| **Multiple Workspaces** | 9.0 (758 reviews) | Not enough data | 
| **Custom Application Integration** | 8.7 (716 reviews) | Not enough data | 

#### Agentic AI - Unified Workspaces

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Autonomous Task Execution** | 7.5 (402 reviews) | Not enough data | 
| **Adaptive Learning** | 7.6 (400 reviews) | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Remote Access/Control** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Customizable Templates** | Not enough data | Not enough data | 
| **Time Zone Tracking** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Projections** | Not enough data | Not enough data | 
| **Prioritization** | Not enough data | Not enough data | 
| **Softphone** | Not enough data | Not enough data | 
| **Employee Activity Monitoring** | Not enough data | Not enough data | 
| **File Transfer** | Not enough data | Not enough data | 
| **Email Management** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Meeting Management** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Tagging** | Not enough data | Not enough data | 
| **Real-Time Data** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Project Time Tracking** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Remote Support** | Not enough data | Not enough data | 
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Live Chat** | Not enough data | Not enough data | 
| **Two-Way Audio & Video** | Not enough data | Not enough data | 
| **Electronic Signature** | Not enough data | Not enough data | 
| **Video Chat** | Not enough data | Not enough data | 
| **Assignment Management** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Communication Management** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Task Management** | Not enough data | Not enough data | 
| **@mentions** | Not enough data | Not enough data | 
| **Progress Tracking** | Not enough data | Not enough data | 
| **Video Conferencing** | Not enough data | Not enough data | 

### Enterprise Search Software

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 9.0/10 | 149 |
| **Viva Engage** | N/A | N/A |

#### Compatibility

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Federated Search** | 9.0 (97 reviews) | Not enough data | 
| **File Types** | 9.0 (100 reviews) | Not enough data | 
| **Global Language Support** | 8.9 (89 reviews) | Not enough data | 

#### Agentic AI - Enterprise Search Software

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Autonomous Task Execution** | 8.4 (57 reviews) | Not enough data | 
| **Multi-step Planning** | 8.3 (54 reviews) | Not enough data | 
| **Cross-system Integration** | 8.9 (55 reviews) | Not enough data | 
| **Adaptive Learning** | 8.5 (55 reviews) | Not enough data | 
| **Proactive Assistance** | 8.5 (55 reviews) | Not enough data | 
| **Decision Making** | 8.6 (54 reviews) | Not enough data | 
| **AI/Machine Learning** | Not enough data | Not enough data | 

#### Search Queries

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Typo Tolerance** | 8.8 (93 reviews) | Not enough data | 
| **Faceted Search** | 9.0 (95 reviews) | Not enough data | 
| **Synonyms** | 8.7 (88 reviews) | Not enough data | 
| **Highlighting** | 9.1 (90 reviews) | Not enough data | 
| **Natural Language** | 8.9 (89 reviews) | Not enough data | 
| **Full Text Search** | Not enough data | Not enough data | 

#### AI powered search - Enterprise Search Software

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Generative RAG (Retrieval augmented generation)** | 9.0 (21 reviews) | Not enough data | 
| **Relevance Tuning** | 9.1 (21 reviews) | Not enough data | 
| **NLP & Semantic search** | 9.0 (21 reviews) | Not enough data | 
| **Fuzzy Search** | Not enough data | Not enough data | 

#### Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Personalization** | 8.8 (88 reviews) | Not enough data | 
| **Search Analytics** | 8.9 (88 reviews) | Not enough data | 
| **Integrations** | 9.2 (97 reviews) | Not enough data | 
| **Visual Analytics** | Not enough data | Not enough data | 
| **Real-Time Analytics** | Not enough data | Not enough data | 

#### Compatibility - Enterprise Search Software

| Feature | Slack | Viva Engage | 
|---|---|---|
| **File Types** | 9.3 (23 reviews) | Not enough data | 
| **Federated Search** | 9.2 (21 reviews) | Not enough data | 
| **Global Language Support** | 9.2 (22 reviews) | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Sentiment Analysis** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Behavior Tracking** | Not enough data | Not enough data | 
| **Data Storage Management** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Multiple Data Sources** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Forecasting** | Not enough data | Not enough data | 
| **Metadata Management** | Not enough data | Not enough data | 
| **File Management** | Not enough data | Not enough data | 
| **Text Analysis** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Compliance Management** | Not enough data | Not enough data | 
| **Tagging** | Not enough data | Not enough data | 
| **Indexing** | Not enough data | Not enough data | 
| **Autocomplete** | Not enough data | Not enough data | 
| **For eCommerce** | Not enough data | Not enough data | 
| **Customer Database** | Not enough data | Not enough data | 
| **Catalog Management** | Not enough data | Not enough data | 
| **Query Suggestions** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Content Management** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Task Management** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Data Capture and Transfer** | Not enough data | Not enough data | 
| **Data Visualization** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **For Enterprises** | Not enough data | Not enough data | 
| **User Management** | Not enough data | Not enough data | 

#### Functionality - Enterprise Search Software

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Personalization** | 9.2 (23 reviews) | Not enough data | 
| **Search Analytics** | 9.0 (21 reviews) | Not enough data | 
| **Integrations** | 9.4 (24 reviews) | Not enough data | 

#### Search Queries - Enterprise Search Software

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Highlighting** | 9.4 (21 reviews) | Not enough data | 
| **Faceted Search** | 9.1 (20 reviews) | Not enough data | 
| **Typo Tolerance** | 9.0 (22 reviews) | Not enough data | 
| **Synonyms** | 9.3 (22 reviews) | Not enough data | 

### Work Management

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 8.5/10 | 3283 |
| **Viva Engage** | N/A | N/A |

#### Automation

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Workflows** | 8.9 (1276 reviews) | Not enough data | 
| **Customization** | 8.8 (1229 reviews) | Not enough data | 
| **Data repository** | 8.5 (1202 reviews) | Not enough data | 

#### Administration

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Permissions** | 8.8 (1216 reviews) | Not enough data | 
| **Procedures** | 8.6 (1135 reviews) | Not enough data | 
| **Remote Work** | 9.4 (1436 reviews) | Not enough data | 

#### Project management

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Task Prioritization** | 8.7 (1176 reviews) | Not enough data | 
| **Dependencies** | 8.5 (1116 reviews) | Not enough data | 
| **Planning** | 8.6 (1140 reviews) | Not enough data | 
| **Views** | 8.5 (1130 reviews) | Not enough data | 
| **Scheduling** | 8.6 (1142 reviews) | Not enough data | 
| **Critical Path** | 8.3 (1094 reviews) | Not enough data | 
| **Dashboards** | 8.3 (1124 reviews) | Not enough data | 

#### Workload

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Resource Allocation** | 8.4 (1076 reviews) | Not enough data | 
| **Workspace** | 8.8 (1191 reviews) | Not enough data | 
| **Configuration** | 8.6 (1092 reviews) | Not enough data | 
| **Insights** | 8.5 (1098 reviews) | Not enough data | 

#### Communication & Collaboration

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Communication Channels** | 9.4 (2141 reviews) | Not enough data | 
| **Document Management** | 9.1 (1431 reviews) | Not enough data | 
| **Collaboration** | 9.4 (1733 reviews) | Not enough data | 

#### Cost Management

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Project Budgeting** | 8.0 (1068 reviews) | Not enough data | 
| **Time & Expense** | 8.2 (1071 reviews) | Not enough data | 
| **Profitability** | 8.1 (1063 reviews) | Not enough data | 

#### Integration

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Front Office** | 8.8 (1409 reviews) | Not enough data | 
| **Back Office** | 8.4 (1091 reviews) | Not enough data | 
| **External data** | 8.4 (1115 reviews) | Not enough data | 

#### Generative AI

| Feature | Slack | Viva Engage | 
|---|---|---|
| **AI Text Generation** | 7.5 (1039 reviews) | Not enough data | 
| **AI Text Summarization** | 7.7 (1065 reviews) | Not enough data | 

#### Agentic AI - Work Management

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Autonomous Task Execution** | 7.7 (527 reviews) | Not enough data | 
| **Multi-step Planning** | 7.8 (513 reviews) | Not enough data | 
| **Cross-system Integration** | 8.3 (570 reviews) | Not enough data | 
| **Natural Language Interaction** | 7.9 (530 reviews) | Not enough data | 

### Project Collaboration

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 8.5/10 | 1722 |
| **Viva Engage** | N/A | N/A |

#### Communication

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Chat** | 9.5 (1227 reviews) | Not enough data | 
| **Discussions** | 9.4 (1173 reviews) | Not enough data | 
| **External** | 8.9 (1066 reviews) | Not enough data | 
| **Feedback** | 8.9 (1038 reviews) | Not enough data | 
| **Announcements** | 9.1 (1053 reviews) | Not enough data | 

#### Content & Documents

| Feature | Slack | Viva Engage | 
|---|---|---|
| **File Sharing** | 9.2 (1128 reviews) | Not enough data | 
| **Notes** | 8.9 (1046 reviews) | Not enough data | 
| **Search** | 8.7 (1081 reviews) | Not enough data | 
| **Versioning** | 8.1 (1001 reviews) | Not enough data | 

#### Controls

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Custom Views** | 8.3 (987 reviews) | Not enough data | 
| **Followers** | 8.1 (982 reviews) | Not enough data | 
| **User Management** | 8.7 (997 reviews) | Not enough data | 
| **Calendars** | 8.4 (1006 reviews) | Not enough data | 
| **Public Sharing** | 8.2 (974 reviews) | Not enough data | 

#### Project Management

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Task Management** | 8.4 (1000 reviews) | Not enough data | 
| **Planning** | 8.3 (975 reviews) | Not enough data | 
| **Visibility** | 8.5 (983 reviews) | Not enough data | 
| **Integration** | 8.7 (1000 reviews) | Not enough data | 

#### Remote Collaboration

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Alignment** | 9.0 (999 reviews) | Not enough data | 
| **Accountability** | 8.7 (969 reviews) | Not enough data | 
| **Connectivity** | 9.0 (992 reviews) | Not enough data | 
| **Offline Mode** | 7.9 (952 reviews) | Not enough data | 

#### Generative AI

| Feature | Slack | Viva Engage | 
|---|---|---|
| **AI Text Generation** | 7.3 (926 reviews) | Not enough data | 
| **AI Text Summarization** | 7.4 (930 reviews) | Not enough data | 

#### Agentic AI - Project Collaboration

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Multi-step Planning** | 7.5 (436 reviews) | Not enough data | 
| **Cross-system Integration** | 7.7 (440 reviews) | Not enough data | 

### Enterprise Social Networking (ESN)

| Product | Score | Reviews |
|---|---|---|
| **Slack** | N/A | N/A |
| **Viva Engage** | 9.0/10 | 9 |

#### Content & Community Features - Enterprise Social Networking (ESN)

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Gamification** | Not enough data | 7.7 (8 reviews) | 
| **Community Building** | Not enough data | 9.4 (9 reviews) | 
| **Knowledge Sharing** | Not enough data | 8.8 (8 reviews) | 
| **User Generated Content** | Not enough data | 9.4 (9 reviews) | 

#### Admin & Reporting Features - Enterprise Social Networking (ESN)

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Content Moderation** | Not enough data | 9.2 (8 reviews) | 
| **Polls & Surveys** | Not enough data | 9.4 (8 reviews) | 
| **Content Management** | Not enough data | 9.0 (8 reviews) | 
| **Analytics & Reporting** | Not enough data | 9.0 (8 reviews) | 
| **User Management** | Not enough data | 9.0 (8 reviews) | 
| **Contact Management** | Not enough data | Not enough data | 
| **Newsletter Management** | Not enough data | Not enough data | 
| **Email Management** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Meeting Management** | Not enough data | Not enough data | 

#### Agentic AI - Enterprise Social Networking (ESN)

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Multi-step Planning** | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Search/Filter** | Not enough data | Not enough data | 
| **Event Calendar** | Not enough data | Not enough data | 
| **Employee Database** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Tagging** | Not enough data | Not enough data | 
| **Customizable Templates** | Not enough data | Not enough data | 
| **Discussions/Forums** | Not enough data | Not enough data | 
| **Document Storage** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Role-Based Permissions** | Not enough data | Not enough data | 
| **Real-Time Updates** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Employee Photos** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Transcripts/Chat History** | Not enough data | Not enough data | 
| **Mobile Alerts** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Engagement Tracking** | Not enough data | Not enough data | 
| **Blogs** | Not enough data | Not enough data | 
| **@mentions** | Not enough data | Not enough data | 

### Audio Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 7.6/10 | 351 |
| **Viva Engage** | N/A | N/A |

#### Agentic AI - Audio Conferencing

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Proactive Assistance** | 7.5 (278 reviews) | Not enough data | 
| **Decision Making** | 7.7 (279 reviews) | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Screen Sharing** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Custom Greetings/Messages** | Not enough data | Not enough data | 
| **Mobile Access** | Not enough data | Not enough data | 
| **International Calling** | Not enough data | Not enough data | 
| **Virtual Voicemail** | Not enough data | Not enough data | 
| **Call Scheduling** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Call Conferencing** | Not enough data | Not enough data | 
| **Reporting/Analytics** | Not enough data | Not enough data | 
| **File Sharing** | Not enough data | Not enough data | 
| **Two Way Audio & Video** | Not enough data | Not enough data | 
| **Audio/Video Recording** | Not enough data | Not enough data | 
| **Real-Time Chat** | Not enough data | Not enough data | 
| **Audio Calls** | Not enough data | Not enough data | 

### Employee Intranet

| Product | Score | Reviews |
|---|---|---|
| **Slack** | N/A | N/A |
| **Viva Engage** | N/A | N/A |

#### Agentic AI - Employee Intranet

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | 
| **Personalization** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Collaboration Tools** | Not enough data | Not enough data | 
| **Activity/News Feed** | Not enough data | Not enough data | 
| **Employee Communities** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **Task Management** | Not enough data | Not enough data | 
| **Employee Portal** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Surveys & Feedback** | Not enough data | Not enough data | 
| **Multi-Language** | Not enough data | Not enough data | 
| **Engagement Tracking** | Not enough data | Not enough data | 
| **Third-Party Integrations** | Not enough data | Not enough data | 
| **Active Directory Integration** | Not enough data | Not enough data | 
| **Discussions/Forums** | Not enough data | Not enough data | 
| **Wiki** | Not enough data | Not enough data | 
| **Event Calendar** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **File Management** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Org Chart Creation** | Not enough data | Not enough data | 
| **Employee Database** | Not enough data | Not enough data | 
| **Employee Profiles** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Alerts/Notifications** | Not enough data | Not enough data | 
| **Blogs** | Not enough data | Not enough data | 
| **Policy Management** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Access Controls/Permissions** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Content Library** | Not enough data | Not enough data | 
| **Knowledge Base Management** | Not enough data | Not enough data | 
| **Private Network** | Not enough data | Not enough data | 
| **Tagging** | Not enough data | Not enough data | 
| **Real-Time Notifications** | Not enough data | Not enough data | 
| **Customizable Templates** | Not enough data | Not enough data | 
| **Chat/Messaging** | Not enough data | Not enough data | 
| **Document Storage** | Not enough data | Not enough data | 
| **Mobile Access** | Not enough data | Not enough data | 
| **Employee Onboarding** | Not enough data | Not enough data | 
| **Search/Filter** | Not enough data | Not enough data | 
| **Content Management** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Customizable Forms** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 

### AI Note-Taking Software

| Product | Score | Reviews |
|---|---|---|
| **Slack** | 9.2/10 | 35 |
| **Viva Engage** | N/A | N/A |

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Action Item extraction** | 8.9 (12 reviews) | Not enough data | 
| **Summary Generation** | 9.2 (13 reviews) | Not enough data | 

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Speech-to-text Transcription** | 9.5 (14 reviews) | Not enough data | 

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Team-based Access** | 9.4 (15 reviews) | Not enough data | 

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Multi-Language and Accent Support** | 9.2 (13 reviews) | Not enough data | 

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Integrations** | 9.1 (15 reviews) | Not enough data | 

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Access Control** | 9.1 (16 reviews) | Not enough data | 

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Semantic Search** | 8.8 (13 reviews) | Not enough data | 

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

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Speaker Recognition** | 9.2 (14 reviews) | Not enough data | 

### Enterprise AI Chatbots

| Product | Score | Reviews |
|---|---|---|
| **Slack** | N/A | N/A |
| **Viva Engage** | N/A | N/A |

#### AI & Conversational Intelligence - Enterprise AI Chatbots

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Retrieval-Augmented Generation (RAG)** | Not enough data | Not enough data | 
| **Natural Language Understanding** | Not enough data | Not enough data | 
| **Multi-Turn Conversations** | Not enough data | Not enough data | 
| **Contextual Response Generation** | Not enough data | Not enough data | 

#### Knowledge & Data Integration - Enterprise AI Chatbots

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Real-Time Data Retrieval** | Not enough data | Not enough data | 
| **API & Custom Data Connectors** | Not enough data | Not enough data | 
| **Knowledge Base Integrations** | Not enough data | Not enough data | 
| **CRM & ERP Integrations** | Not enough data | Not enough data | 

#### Security, Governance & Compliance - Enterprise AI Chatbots

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Audit Logging** | Not enough data | Not enough data | 
| **Role-Based Access Controls** | Not enough data | Not enough data | 
| **Data Residency Controls** | Not enough data | Not enough data | 
| **Response Guardrails** | Not enough data | Not enough data | 

#### Administration & Deployment - Enterprise AI Chatbots

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Workflow Automation** | Not enough data | Not enough data | 
| **Escalation Workflows** | Not enough data | Not enough data | 
| **Conversation Analytics** | Not enough data | Not enough data | 
| **Multi-Channel Deployment** | Not enough data | Not enough data | 

### Knowledge Management

| Product | Score | Reviews |
|---|---|---|
| **Slack** | N/A | N/A |
| **Viva Engage** | N/A | N/A |

#### Knowledge Base

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Q & A** | Not enough data | Not enough data | 
| **Link Sharing** | Not enough data | Not enough data | 
| **Searchable** | Not enough data | Not enough data | 

#### Security

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Verification** | Not enough data | Not enough data | 
| **Role-Based Permission** | Not enough data | Not enough data | 
| **Public vs Private** | Not enough data | Not enough data | 

#### Content

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Trackable Analytics** | Not enough data | Not enough data | 
| **Import** | Not enough data | Not enough data | 
| **File Viewing** | Not enough data | Not enough data | 
| **Update Notifications** | Not enough data | Not enough data | 

#### Communication

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Social Features** | Not enough data | Not enough data | 
| **Tagging ** | Not enough data | Not enough data | 
| **Upload ** | Not enough data | Not enough data | 
| **Comments** | Not enough data | Not enough data | 

#### Additional Functionality

| Feature | Slack | Viva Engage | 
|---|---|---|
| **Collaboration Tools** | Not enough data | Not enough data | 
| **SSL Security** | Not enough data | Not enough data | 
| **Reporting & Statistics** | Not enough data | Not enough data | 
| **Customizable Reports** | Not enough data | Not enough data | 
| **Customizable Fields** | Not enough data | Not enough data | 
| **Customizable Branding** | Not enough data | Not enough data | 
| **Data Import/Export** | Not enough data | Not enough data | 
| **Single Sign On** | Not enough data | Not enough data | 
| **Content Management** | Not enough data | Not enough data | 
| **Content Library** | Not enough data | Not enough data | 
| **Workflow Management** | Not enough data | Not enough data | 
| **Text Editing** | Not enough data | Not enough data | 
| **Widgets** | Not enough data | Not enough data | 
| **Generative AI** | Not enough data | Not enough data | 
| **Knowledge Base Management** | Not enough data | Not enough data | 
| **Activity Tracking** | Not enough data | Not enough data | 
| **Discussions/Forums** | Not enough data | Not enough data | 
| **API** | Not enough data | Not enough data | 
| **Live Chat** | Not enough data | Not enough data | 
| **Activity Dashboard** | Not enough data | Not enough data | 
| **AI Copilot** | Not enough data | Not enough data | 
| **Calendar Management** | Not enough data | Not enough data | 
| **Drag & Drop** | Not enough data | Not enough data | 
| **Self Service Portal** | Not enough data | Not enough data | 
| **Communication Management** | Not enough data | Not enough data | 
| **Commenting/Notes** | Not enough data | Not enough data | 
| **Catalog Management** | Not enough data | Not enough data | 
| **Document Management** | Not enough data | Not enough data | 

---
## Categories

**Unique to Slack (11):** [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), [Enterprise AI Chatbots Software](https://www.g2.com/categories/enterprise-ai-chatbots)

**Unique to Viva Engage (2):** [Enterprise Social Networking (ESN) Software](https://www.g2.com/categories/enterprise-social-networking-esn), [Employee Intranet Software](https://www.g2.com/categories/employee-intranet)


---
## Reviewer Demographics

### By Company Size

| Segment | Slack | Viva Engage | 
|---|---|---|
| **Small-Business** | 40.8% | 10.2% | 
| **Mid-Market** | 40.7% | 30.2% | 
| **Enterprise** | 18.5% | 59.6% | 

### By Industry

#### Slack

- **Computer Software:** 15.4%
- **Information Technology and Services:** 13.2%
- **Marketing and Advertising:** 8.4%
- **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:** 1.8%
- **Other:** 42.1%

#### Viva Engage

- **Information Technology and Services:** 14.8%
- **Computer Software:** 6.8%
- **Hospital & Health Care:** 5.2%
- **Education Management:** 3.9%
- **Higher Education:** 3.8%
- **Non-Profit Organization Management:** 3.6%
- **Retail:** 3.5%
- **Accounting:** 3.4%
- **Management Consulting:** 2.7%
- **Financial Services:** 2.5%
- **Other:** 49.5%

---
## Alternatives

### Alternatives to Slack

- [ClickUp](https://www.g2.com/products/clickup/reviews) — 4.6/5 stars (14292 reviews)
- [monday AI Work Platform](https://www.g2.com/products/monday-com/reviews) — 4.7/5 stars (17216 reviews)
- [Confluence](https://www.g2.com/products/confluence/reviews) — 4.1/5 stars (4369 reviews)
- [Swit](https://www.g2.com/products/swit/reviews) — 4.7/5 stars (362 reviews)
- [Asana](https://www.g2.com/products/asana/reviews) — 4.4/5 stars (13972 reviews)
- [Wrike](https://www.g2.com/products/wrike/reviews) — 4.2/5 stars (4538 reviews)
- [Workvivo](https://www.g2.com/products/workvivo/reviews) — 4.8/5 stars (2701 reviews)
- [Smartsheet](https://www.g2.com/products/smartsheet/reviews) — 4.4/5 stars (22745 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56616 reviews)
- [Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews) — 4.4/5 stars (19327 reviews)

### Alternatives to Viva Engage

- [Workvivo](https://www.g2.com/products/workvivo/reviews) — 4.8/5 stars (2701 reviews)
- [Jive](https://www.g2.com/products/jive/reviews) — 3.8/5 stars (309 reviews)
- [eXo Platform](https://www.g2.com/products/exo-platform/reviews) — 4.3/5 stars (93 reviews)
- [Simpplr](https://www.g2.com/products/simpplr/reviews) — 4.6/5 stars (377 reviews)
- [Bitrix24](https://www.g2.com/products/bitrix24/reviews) — 4.1/5 stars (612 reviews)
- [HCL Connections](https://www.g2.com/products/hcl-connections/reviews) — 3.9/5 stars (518 reviews)
- [Blink](https://www.g2.com/products/blink-blink/reviews) — 4.6/5 stars (404 reviews)
- [Jostle](https://www.g2.com/products/jostle/reviews) — 4.6/5 stars (270 reviews)
- [Staffbase](https://www.g2.com/products/staffbase/reviews) — 4.6/5 stars (249 reviews)
- [Sociabble](https://www.g2.com/products/sociabble/reviews) — 4.7/5 stars (435 reviews)

---
## Top Discussions

### 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) — 29 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) — 23 comments, 7 upvotes
  > **Top comment:** "It connect us with the people no matter where we are through messaging and calls."
- Title: [Is Slack a good tool?](https://www.g2.com/discussions/is-slack-a-good-tool) — 21 comments, 23 upvotes
  > **Top comment:** "Yes it is a good tool. I am using it for a couple of years.  "
- 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) — 19 comments, 4 upvotes
  > **Top comment:** "Microsoft Outlook, Google Suite"

### Viva Engage

- Title: [I'm new to Yammer and unsure how to engage my team in company-wide discussions. Any advice?](https://www.g2.com/discussions/i-m-new-to-yammer-and-unsure-how-to-engage-my-team-in-company-wide-discussions-any-advice) — 2 comments
  > **Top comment:** "To engage your team on Yammer, start by setting a welcoming tone with introductions and simple icebreaker questions. Tag team members in relevant posts,..."
- Title: [Is yammer any good?](https://www.g2.com/discussions/is-yammer-any-good) — 1 comment
  > **Top comment:** "Yes it’s a great tool for employee communication. "
- Title: [What can yammer be used for?](https://www.g2.com/discussions/what-can-yammer-be-used-for) — 1 comment
  > **Top comment:** "Networking with colleagues"
- Title: [Can i get notifications of when a poll is being answered and the progress made based on the number of users that have submitted their answers to determine percentages of participation?](https://www.g2.com/discussions/can-i-get-notifications-of-when-a-poll-is-being-answered-and-the-progress-made-based-on-the-number-of-users-that-have-submitted-their-answers-to-determine-percentages-of-participation) — 1 comment, 1 upvote
  > **Top comment:** "Yes you can get notifications in your email"
- Title: [Whats the best way to use Yammer is it only for sharing an update or a post?](https://www.g2.com/discussions/30075-whats-the-best-way-to-use-yammer-is-it-only-for-sharing-an-update-or-a-post) — 1 comment
  > **Top comment:** "in the application but the Web interface is not bad at all"

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/slack-vs-viva-engage)