# Mattermost vs Slack Comparison
---
## AI Generated Summary
- **G2 reviewers report** that Slack excels in team collaboration, with features like organized channels and quick messaging that streamline communication. Users appreciate the seamless file sharing and helpful app integrations, making it a preferred choice for many.
- **Users say** Mattermost is reliable for team communication, particularly in DevOps workflows. They highlight its ability to handle various types of information, such as text, photos, and files, which enhances its utility for internal communications.
- **Reviewers mention** that Slack's implementation process is notably quick and intuitive, with many users praising the onboarding experience. This ease of setup contributes to a smoother transition for teams looking to adopt new communication tools.
- **According to verified reviews** , Mattermost offers cost savings at scale, especially for organizations that require a self-hosted solution. Users appreciate that there are no costs per usage, which can be a significant advantage for larger teams.
- **G2 reviewers highlight** Slack's superior support quality, with many users noting responsive assistance and a wealth of resources available for troubleshooting. This level of support can be crucial for teams that rely heavily on effective communication tools.
- **Users report** that while Mattermost provides a clean and easy-to-navigate interface, it sometimes lacks the advanced integrations and features that Slack offers, which can limit its effectiveness in more complex workflows.



| | Mattermost | Slack | 
|---|---|---|
| **Star Rating** | 4.3 out of 5 | 4.5 out of 5 | 
| **Total Reviews** | 368 | 39,120 | 
| **Largest Market Segment** | Mid-Market (37.3% of reviews) | Small-Business (41.0% of reviews) | 
| **Entry Level Price** | $0.00 | $0.00 | 

---
## Top Pros & Cons

### Mattermost

Pros:
- Ease of Use (15 reviews)
- Features (14 reviews)

Cons:
- Not Intuitive (8 reviews)
- Performance Issues (8 reviews)

### Slack

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

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

---
## Ratings Comparison
| Rating | Mattermost | Slack | 
|---|---|---|
  | **Meets Requirements** | 8.7 (300 reviews) | 9.2 (31674 reviews) | 
  | **Ease of Use** | 8.8 (306 reviews) | 9.2 (32535 reviews) | 
  | **Ease of Setup** | 8.1 (96 reviews) | 9.2 (8846 reviews) | 
  | **Ease of Admin** | 8.3 (69 reviews) | 8.9 (5453 reviews) | 
  | **Quality of Support** | 8.2 (231 reviews) | 8.8 (22049 reviews) | 
  | **Has the product been a good partner in doing business?** | 9.0 (58 reviews) | 9.1 (4934 reviews) | 
  | **Product Direction (% positive)** | 8.4 (295 reviews) | 8.7 (30879 reviews) | 

---
## Pricing

### Mattermost

#### Entry-Level Pricing

Plan: Starter

Price: $0.00

Description: Increased productivity for small teams

Key Features:
- Unlimited 1:1 and group messaging
- Unlimited users, channels, teams
- Unlimited boards

[Browse all 3 editions](https://www.g2.com/products/mattermost/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 |
|---|---|---|
| **Mattermost** | 6.8/10 | 222 |
| **Slack** | 8.2/10 | 16056 |

#### Business Instant Messaging

| Feature | Mattermost | Slack | 
|---|---|---|
| **File Sharing** | 8.7 (195 reviews) | 9.1 (13993 reviews) | 
| **Notifications** | 8.6 (202 reviews) | 9.0 (14526 reviews) | 
| **Search** | 8.0 (191 reviews) | 8.6 (13816 reviews) | 

#### Business Instant Messaging 

| Feature | Mattermost | Slack | 
|---|---|---|
| **Audio Conferencing** | 7.8 (118 reviews) | 8.5 (10260 reviews) | 
| **Video Conferencing** | 7.9 (110 reviews) | 8.1 (9593 reviews) | 

#### Business Instant Messaging

| Feature | Mattermost | Slack | 
|---|---|---|
| **Mobile Application** | 8.0 (177 reviews) | 9.1 (13694 reviews) | 
| **Web Application** | 8.9 (188 reviews) | 9.2 (13296 reviews) | 
| **Integrations** | 8.3 (166 reviews) | 9.0 (11851 reviews) | 

#### Generative AI - Business Instant Messaging

| Feature | Mattermost | Slack | 
|---|---|---|
| **Text Summarization** | 4.6 (14 reviews) | 7.5 (1486 reviews) | 

#### AI - Business Instant Messaging

| Feature | Mattermost | Slack | 
|---|---|---|
| **AI Powered Search** | 5.1 (14 reviews) | 7.5 (1466 reviews) | 
| **Smart Notifications** | 6.0 (14 reviews) | 7.9 (1476 reviews) | 
| **AI Powered Language Translation** | 4.4 (13 reviews) | 7.4 (1447 reviews) | 
| **Content Generation** | 5.5 (13 reviews) | 7.4 (1448 reviews) | 

#### Agentic AI - Business Instant Messaging

| Feature | Mattermost | Slack | 
|---|---|---|
| **Cross-system Integration** | 5.5 (10 reviews) | 7.7 (878 reviews) | 
| **Natural Language Interaction** | 5.0 (10 reviews) | 7.7 (861 reviews) | 

### Workflow Management

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | 8.2/10 | 21 |
| **Slack** | 8.4/10 | 908 |

#### Setup

| Feature | Mattermost | Slack | 
|---|---|---|
| **Activities** | 8.5 (20 reviews) | 9.1 (678 reviews) | 
| **Flows** | 8.8 (20 reviews) | 8.9 (676 reviews) | 
| **Dependencies** | 7.9 (20 reviews) | 8.7 (649 reviews) | 
| **Notifications** | 8.7 (21 reviews) | 8.9 (690 reviews) | 

#### Management

| Feature | Mattermost | Slack | 
|---|---|---|
| **Updates** | 8.7 (19 reviews) | 9.0 (664 reviews) | 
| **Audit Trail** | 8.0 (19 reviews) | 8.7 (641 reviews) | 
| **Integration** | 8.1 (20 reviews) | 8.9 (661 reviews) | 

#### Generative AI

| Feature | Mattermost | Slack | 
|---|---|---|
| **AI Text Generation** | 6.9 (12 reviews) | 7.7 (557 reviews) | 

#### Agentic AI - Workflow Management

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

### Q&A Platforms

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 8.8/10 | 414 |

#### Account Options

| Feature | Mattermost | Slack | 
|---|---|---|
| **Single Sign-On (SSO)** | Not enough data | 9.2 (287 reviews) | 
| **Social Login** | Not enough data | 8.4 (278 reviews) | 
| **Reputation System** | Not enough data | 8.6 (269 reviews) | 
| **Topic Subscription** | Not enough data | 8.7 (275 reviews) | 
| **Bookmarking** | Not enough data | 8.9 (285 reviews) | 
| **History** | Not enough data | 8.9 (280 reviews) | 

#### Q&A Tools

| Feature | Mattermost | Slack | 
|---|---|---|
| **Tags** | Not enough data | 9.1 (285 reviews) | 
| **Commenting System** | Not enough data | 9.1 (279 reviews) | 
| **Notifications** | Not enough data | 9.1 (286 reviews) | 
| **Voting** | Not enough data | 8.7 (271 reviews) | 
| **Integrations** | Not enough data | 9.0 (282 reviews) | 
| **Knowledge Integrations** | Not enough data | 8.9 (273 reviews) | 
| **Embedding** | Not enough data | 8.6 (267 reviews) | 
| **Formatting** | Not enough data | 8.9 (271 reviews) | 
| **Analytics** | Not enough data | 8.5 (266 reviews) | 

### Knowledge Base

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 8.3/10 | 499 |

#### Knowledge Pages

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

#### Knowledge Dissemination

| Feature | Mattermost | Slack | 
|---|---|---|
| **Page Analytics** | Not enough data | 8.2 (321 reviews) | 
| **Permissions** | Not enough data | 8.7 (329 reviews) | 
| **Knowledge Sharing** | Not enough data | 9.0 (339 reviews) | 
| **Notifications** | Not enough data | 8.9 (338 reviews) | 
| **Advanced Search** | Not enough data | 8.3 (330 reviews) | 
| **Browser Extension** | Not enough data | 8.2 (319 reviews) | 
| **Organization** | Not enough data | 8.7 (335 reviews) | 
| **Other Integrations** | Not enough data | 8.6 (324 reviews) | 
| **Knowledge Integrations** | Not enough data | 8.6 (315 reviews) | 

#### Agentic AI - Knowledge Base

| Feature | Mattermost | Slack | 
|---|---|---|
| **Adaptive Learning** | Not enough data | 7.9 (197 reviews) | 
| **Natural Language Interaction** | Not enough data | 7.9 (199 reviews) | 
| **Proactive Assistance** | Not enough data | 7.8 (197 reviews) | 

### Unified Workspaces

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 8.3/10 | 1029 |

#### Login Options 

| Feature | Mattermost | Slack | 
|---|---|---|
| **Single Sign-On (SSO)** | Not enough data | 9.1 (776 reviews) | 
| **Password Saver** | Not enough data | 8.5 (738 reviews) | 

#### Productivity

| Feature | Mattermost | Slack | 
|---|---|---|
| **Email Client** | Not enough data | 8.0 (727 reviews) | 
| **Split Screen** | Not enough data | 8.3 (733 reviews) | 
| **Activity Feed** | Not enough data | 8.6 (741 reviews) | 
| **Virtual Assistant** | Not enough data | 7.9 (715 reviews) | 
| **Analytics and Reporting** | Not enough data | 7.9 (707 reviews) | 

#### Customization 

| Feature | Mattermost | Slack | 
|---|---|---|
| **Custom Workflows** | 8.9 (19 reviews) | 8.6 (737 reviews) | 
| **Multiple Workspaces** | Not enough data | 9.0 (757 reviews) | 
| **Custom Application Integration** | Not enough data | 8.7 (719 reviews) | 

#### Agentic AI - Unified Workspaces

| Feature | Mattermost | Slack | 
|---|---|---|
| **Autonomous Task Execution** | Not enough data | 7.5 (403 reviews) | 
| **Adaptive Learning** | Not enough data | 7.6 (401 reviews) | 

### Enterprise Search Software

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 9.0/10 | 143 |

#### Compatibility

| Feature | Mattermost | Slack | 
|---|---|---|
| **Federated Search** | Not enough data | 9.0 (96 reviews) | 
| **File Types** | Not enough data | 9.0 (98 reviews) | 
| **Global Language Support** | Not enough data | 8.9 (89 reviews) | 

#### Agentic AI - Enterprise Search Software

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

#### Search Queries

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

#### AI powered search - Enterprise Search Software

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

#### Functionality

| Feature | Mattermost | Slack | 
|---|---|---|
| **Personalization** | Not enough data | 8.8 (87 reviews) | 
| **Search Analytics** | Not enough data | 8.9 (88 reviews) | 
| **Integrations** | Not enough data | 9.1 (94 reviews) | 

#### Compatibility - Enterprise Search Software

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

#### Functionality - Enterprise Search Software

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

#### Search Queries - Enterprise Search Software

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

### Work Management

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 8.5/10 | 2706 |

#### Automation

| Feature | Mattermost | Slack | 
|---|---|---|
| **Workflows** | Not enough data | 8.9 (1253 reviews) | 
| **Customization** | Not enough data | 8.8 (1207 reviews) | 
| **Data repository** | Not enough data | 8.5 (1180 reviews) | 

#### Administration

| Feature | Mattermost | Slack | 
|---|---|---|
| **Permissions** | Not enough data | 8.8 (1203 reviews) | 
| **Procedures** | Not enough data | 8.6 (1135 reviews) | 
| **Remote Work** | Not enough data | 9.4 (1378 reviews) | 

#### Project management

| Feature | Mattermost | Slack | 
|---|---|---|
| **Task Prioritization** | Not enough data | 8.7 (1170 reviews) | 
| **Dependencies** | Not enough data | 8.5 (1116 reviews) | 
| **Planning** | Not enough data | 8.6 (1140 reviews) | 
| **Views** | Not enough data | 8.5 (1128 reviews) | 
| **Scheduling** | Not enough data | 8.6 (1140 reviews) | 
| **Critical Path** | Not enough data | 8.3 (1095 reviews) | 
| **Dashboards** | Not enough data | 8.3 (1121 reviews) | 

#### Workload

| Feature | Mattermost | Slack | 
|---|---|---|
| **Resource Allocation** | Not enough data | 8.4 (1077 reviews) | 
| **Workspace** | Not enough data | 8.8 (1174 reviews) | 
| **Configuration** | Not enough data | 8.6 (1093 reviews) | 
| **Insights** | Not enough data | 8.5 (1089 reviews) | 

#### Communication & Collaboration

| Feature | Mattermost | Slack | 
|---|---|---|
| **Communication Channels** | Not enough data | 9.4 (1827 reviews) | 
| **Document Management** | Not enough data | 9.0 (1349 reviews) | 
| **Collaboration** | Not enough data | 9.4 (1541 reviews) | 

#### Cost Management

| Feature | Mattermost | Slack | 
|---|---|---|
| **Project Budgeting** | Not enough data | 8.0 (1069 reviews) | 
| **Time & Expense** | Not enough data | 8.2 (1070 reviews) | 
| **Profitability** | Not enough data | 8.1 (1064 reviews) | 

#### Integration

| Feature | Mattermost | Slack | 
|---|---|---|
| **Front Office** | Not enough data | 8.7 (1290 reviews) | 
| **Back Office** | Not enough data | 8.4 (1082 reviews) | 
| **External data** | Not enough data | 8.4 (1093 reviews) | 

#### Generative AI

| Feature | Mattermost | Slack | 
|---|---|---|
| **AI Text Generation** | Not enough data | 7.5 (1029 reviews) | 
| **AI Text Summarization** | Not enough data | 7.7 (1048 reviews) | 

#### Agentic AI - Work Management

| Feature | Mattermost | Slack | 
|---|---|---|
| **Autonomous Task Execution** | Not enough data | 7.7 (520 reviews) | 
| **Multi-step Planning** | Not enough data | 7.8 (511 reviews) | 
| **Cross-system Integration** | Not enough data | 8.2 (549 reviews) | 
| **Natural Language Interaction** | Not enough data | 7.8 (516 reviews) | 

### Project Collaboration

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 8.5/10 | 1668 |

#### Communication

| Feature | Mattermost | Slack | 
|---|---|---|
| **Chat** | Not enough data | 9.5 (1200 reviews) | 
| **Discussions** | Not enough data | 9.4 (1153 reviews) | 
| **External** | Not enough data | 8.9 (1058 reviews) | 
| **Feedback** | Not enough data | 8.9 (1037 reviews) | 
| **Announcements** | Not enough data | 9.1 (1051 reviews) | 

#### Content & Documents

| Feature | Mattermost | Slack | 
|---|---|---|
| **File Sharing** | Not enough data | 9.2 (1117 reviews) | 
| **Notes** | Not enough data | 8.9 (1046 reviews) | 
| **Search** | Not enough data | 8.7 (1074 reviews) | 
| **Versioning** | Not enough data | 8.1 (1002 reviews) | 

#### Controls

| Feature | Mattermost | Slack | 
|---|---|---|
| **Custom Views** | Not enough data | 8.3 (987 reviews) | 
| **Followers** | Not enough data | 8.1 (982 reviews) | 
| **User Management** | Not enough data | 8.7 (998 reviews) | 
| **Calendars** | Not enough data | 8.4 (1007 reviews) | 
| **Public Sharing** | Not enough data | 8.2 (973 reviews) | 

#### Project Management

| Feature | Mattermost | Slack | 
|---|---|---|
| **Task Management** | Not enough data | 8.4 (999 reviews) | 
| **Planning** | Not enough data | 8.3 (975 reviews) | 
| **Visibility** | Not enough data | 8.5 (983 reviews) | 
| **Integration** | Not enough data | 8.7 (995 reviews) | 

#### Remote Collaboration

| Feature | Mattermost | Slack | 
|---|---|---|
| **Alignment** | Not enough data | 9.0 (995 reviews) | 
| **Accountability** | Not enough data | 8.7 (969 reviews) | 
| **Connectivity** | Not enough data | 9.0 (989 reviews) | 
| **Offline Mode** | Not enough data | 7.8 (952 reviews) | 

#### Generative AI

| Feature | Mattermost | Slack | 
|---|---|---|
| **AI Text Generation** | Not enough data | 7.3 (924 reviews) | 
| **AI Text Summarization** | Not enough data | 7.4 (928 reviews) | 

#### Agentic AI - Project Collaboration

| Feature | Mattermost | Slack | 
|---|---|---|
| **Multi-step Planning** | Not enough data | 7.5 (436 reviews) | 
| **Cross-system Integration** | Not enough data | 7.7 (439 reviews) | 

### Audio Conferencing

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 7.6/10 | 350 |

#### Agentic AI - Audio Conferencing

| Feature | Mattermost | Slack | 
|---|---|---|
| **Proactive Assistance** | Not enough data | 7.5 (277 reviews) | 
| **Decision Making** | Not enough data | 7.7 (278 reviews) | 

### AI Note-Taking Software

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | 9.1/10 | 32 |

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

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

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

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

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

| Feature | Mattermost | Slack | 
|---|---|---|
| **Team-based Access** | Not enough data | 9.4 (14 reviews) | 

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

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

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

| Feature | Mattermost | Slack | 
|---|---|---|
| **Integrations** | Not enough data | 9.0 (14 reviews) | 

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

| Feature | Mattermost | Slack | 
|---|---|---|
| **Access Control** | Not enough data | 8.9 (14 reviews) | 

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

| Feature | Mattermost | Slack | 
|---|---|---|
| **Semantic Search** | Not enough data | 8.8 (12 reviews) | 

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

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

### Product Management

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | 8.9/10 | 20 |
| **Slack** | N/A | N/A |

#### Communication

| Feature | Mattermost | Slack | 
|---|---|---|
| **Wiki Documentation** | 8.5 (20 reviews) | Not enough data | 
| **Community Forum** | 8.8 (20 reviews) | Not enough data | 
| **Customer Ideation** | 8.7 (19 reviews) | Not enough data | 

#### Planning

| Feature | Mattermost | Slack | 
|---|---|---|
| **Work Capacity** | 9.6 (19 reviews) | Not enough data | 
| **Task Ranking** | 9.6 (19 reviews) | Not enough data | 
| **Kanban Board** | 8.6 (19 reviews) | Not enough data | 
| **Custom Workflows** | 8.9 (19 reviews) | 8.6 (737 reviews) | 
| **Release Forecasting** | 8.6 (19 reviews) | Not enough data | 

#### Workflow Management

| Feature | Mattermost | Slack | 
|---|---|---|
| **Time Tracking** | 8.9 (19 reviews) | Not enough data | 
| **Progress Monitoring** | 9.0 (19 reviews) | Not enough data | 
| **Budgeting** | 9.0 (18 reviews) | Not enough data | 
| **Team Scorecard** | 8.4 (18 reviews) | Not enough data | 

### Knowledge Management

| Product | Score | Reviews |
|---|---|---|
| **Mattermost** | N/A | N/A |
| **Slack** | N/A | N/A |

#### Knowledge Base

| Feature | Mattermost | Slack | 
|---|---|---|
| **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 | Mattermost | Slack | 
|---|---|---|
| **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 | Mattermost | Slack | 
|---|---|---|
| **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 | Mattermost | Slack | 
|---|---|---|
| **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 | 

---
## Categories
**Shared Categories (2):** [Workflow Management Software](https://www.g2.com/categories/workflow-management), [Business Instant Messaging Software](https://www.g2.com/categories/business-instant-messaging)

**Unique to Mattermost (1):** [Product Management Software](https://www.g2.com/categories/product-management-software)

**Unique to Slack (8):** [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), [Project Collaboration Software](https://www.g2.com/categories/project-collaboration), [Audio Conferencing Software](https://www.g2.com/categories/audio-conferencing)


---
## Reviewer Demographics

### By Company Size

| Segment | Mattermost | Slack | 
|---|---|---|
| **Small-Business** | 30.2% | 41.0% | 
| **Mid-Market** | 37.3% | 40.7% | 
| **Enterprise** | 32.5% | 18.3% | 

### By Industry

#### Mattermost

- **Information Technology and Services:** 21.0%
- **Computer Software:** 14.1%
- **Financial Services:** 4.6%
- **Internet:** 3.7%
- **Automotive:** 3.7%
- **Computer & Network Security:** 3.7%
- **Retail:** 3.5%
- **Telecommunications:** 3.2%
- **Education Management:** 2.6%
- **Banking:** 2.6%
- **Other:** 37.2%

#### 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 Mattermost

- [Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews) — 4.4/5 stars (19116 reviews)
- [Rocket.Chat](https://www.g2.com/products/rocket-chat/reviews) — 4.2/5 stars (374 reviews)
- [Webex Suite](https://www.g2.com/products/cisco-webex-suite/reviews) — 4.2/5 stars (18901 reviews)
- [ClickUp](https://www.g2.com/products/clickup/reviews) — 4.6/5 stars (12779 reviews)
- [Flock](https://www.g2.com/products/flock/reviews) — 4.4/5 stars (301 reviews)
- [Zulip](https://www.g2.com/products/zulip/reviews) — 4.6/5 stars (117 reviews)
- [Element](https://www.g2.com/products/element-io/reviews) — 4.2/5 stars (43 reviews)
- [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (48082 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56440 reviews)
- [RingCentral Video](https://www.g2.com/products/ringcentral-video/reviews) — 4.2/5 stars (503 reviews)

### Alternatives to Slack

- [ClickUp](https://www.g2.com/products/clickup/reviews) — 4.6/5 stars (12779 reviews)
- [monday AI Work Platform](https://www.g2.com/products/monday-com/reviews) — 4.7/5 stars (15512 reviews)
- [Confluence](https://www.g2.com/products/confluence/reviews) — 4.1/5 stars (4362 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 (13715 reviews)
- [Wrike](https://www.g2.com/products/wrike/reviews) — 4.2/5 stars (4533 reviews)
- [Smartsheet](https://www.g2.com/products/smartsheet/reviews) — 4.4/5 stars (22401 reviews)
- [Zoom Workplace](https://www.g2.com/products/zoom-workplace/reviews) — 4.5/5 stars (56440 reviews)
- [Microsoft Teams](https://www.g2.com/products/microsoft-teams/reviews) — 4.4/5 stars (19116 reviews)
- [Notion](https://www.g2.com/products/notion/reviews) — 4.6/5 stars (12025 reviews)

---
## Top Discussions

### Mattermost

- Title: [What is Mattermost used for?](https://www.g2.com/discussions/what-is-mattermost-used-for) — 3 comments
  > **Top comment:** "Mattermost is used primarily as a chat platform."
- Title: [What is Mattermost used for?](https://www.g2.com/discussions/mattermost-what-is-mattermost-used-for) — 2 comments
  > **Top comment:** "For business & professional communications mostly. You can say opensource slack."
- Title: [Is Slack a Mattermost?](https://www.g2.com/discussions/is-slack-a-mattermost) — 2 comments
  > **Top comment:** "Slack is not “Mattermost”. But Mattermost in same category, and best open-source alternative to slack with more features."
- Title: [Is Mattermost secure?](https://www.g2.com/discussions/is-mattermost-secure) — 2 comments
  > **Top comment:** "Yes, I have used it for long and it’s the most secure BIM tool that I have ever used!"
- Title: [when are you going to improve its UI?](https://www.g2.com/discussions/when-are-you-going-to-improve-its-ui) — 2 comments, 1 upvote
  > **Top comment:** "Good news, it's opensource so you can fork it yourself:
https://github.com/mattermost
"

### 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) — 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/mattermost-vs-slack)