Slack
MattermostSlack vs Mattermost
Compare the top team collaboration tools side-by-side. All data is verified from official sources and updated regularly.
Verified data No sponsorship biasUpdated July 16, 2026 Official sources
Slack
Free Plan AvailableRecently Added
Mattermost
Recently Added
Comparison Summary
Generated strictly from verified fields — never a subjective ranking.
Best Overall
Slack
Slack leads in all 2 measured categories below.
Strongest Security
Slack
Slack lists the most verified security and compliance certifications (4).
Most AI Features
Slack
Slack lists the most verified AI capabilities (5).
Overview
| Overview | Slack | Mattermost |
|---|---|---|
| Best for | Solo / Freelancer, Small Team | Enterprise |
| Starting price | Not Verified | Not Verified |
| Free plan | Yes | Not Verified |
| Deployment | Cloud / SaaS | On-Premise |
Slack- Best for
- Solo / Freelancer, Small Team
- Starting price
- Not Verified
- Free plan
- Yes
- Deployment
- Cloud / SaaS
Mattermost- Best for
- Enterprise
- Starting price
- Not Verified
- Free plan
- Not Verified
- Deployment
- On-Premise
Key Features
| Key Features | Slack | Mattermost |
|---|---|---|
| Video Meetings | ||
| File Sharing | ||
| Docs | ||
| Screen Sharing | ||
| Templates | ||
| Notifications | ||
| Search | ||
| Recording |
Slack- Video Meetings
- File Sharing
- Docs
- Screen Sharing
- Templates
- Notifications
- Search
- Recording
Mattermost- Video Meetings
- File Sharing
- Docs
- Screen Sharing
- Templates
- Notifications
- Search
- Recording
AI Capabilities
| AI Capabilities | Slack | Mattermost |
|---|---|---|
| AI Summary | Connect teams instantly with online messaging channels. Simplify project updates using team collaboration and business communication tools with Slack AI. | Accelerate your mission critical workflow by integrating people, processes, tools and AI infrastructure on a resilient and adaptable platform. |
| Ai Writing | ||
| Ai Search | ||
| Ai Summaries | ||
| AI Agents | ||
| MCP |
Slack- AI Summary
- Connect teams instantly with online messaging channels. Simplify project updates using team collaboration and business communication tools with Slack AI.
- Ai Writing
- Ai Search
- Ai Summaries
- AI Agents
- MCP
Mattermost- AI Summary
- Accelerate your mission critical workflow by integrating people, processes, tools and AI infrastructure on a resilient and adaptable platform.
- Ai Writing
- Ai Search
- Ai Summaries
- AI Agents
- MCP
Security & Compliance
| Security & Compliance | Slack | Mattermost |
|---|---|---|
| HIPAA | ||
| GDPR | ||
| FEDRAMP MODERATE | ||
| Single Sign-On (SSO) |
Slack- HIPAA
- GDPR
- FEDRAMP MODERATE
- Single Sign-On (SSO)
Mattermost- HIPAA
- GDPR
- FEDRAMP MODERATE
- Single Sign-On (SSO)
Integrations
| Integrations | Slack | Mattermost |
|---|---|---|
| Popular integrations | ||
| Total integrations | 12+ | 12+ |
Slack- Popular integrations
- Total integrations
- 12+
Mattermost- Popular integrations
- Total integrations
- 12+
Media
| Media | Slack | Mattermost |
|---|---|---|
SlackMattermost100% Verified Data
All information is collected from official sources.
No Sponsorship Bias
We don't play favorites. Comparisons are based on verified data.
Updated Regularly
Data is reviewed and updated to ensure accuracy.