Mattermost
SlackMattermost vs Slack
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
Mattermost
Recently Added
Slack
Free Plan AvailableRecently 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 | Mattermost | Slack |
|---|---|---|
| Best for | Enterprise | Solo / Freelancer, Small Team |
| Starting price | Not Verified | Not Verified |
| Free plan | Not Verified | Yes |
| Deployment | On-Premise | Cloud / SaaS |
Mattermost- Best for
- Enterprise
- Starting price
- Not Verified
- Free plan
- Not Verified
- Deployment
- On-Premise
Slack- Best for
- Solo / Freelancer, Small Team
- Starting price
- Not Verified
- Free plan
- Yes
- Deployment
- Cloud / SaaS
Key Features
| Key Features | Mattermost | Slack |
|---|---|---|
| Kanban | ||
| File Sharing | ||
| Task Management | ||
| Docs | ||
| Goals | ||
| Workflow Automation | ||
| Screen Sharing | ||
| Mobile App |
Mattermost- Kanban
- File Sharing
- Task Management
- Docs
- Goals
- Workflow Automation
- Screen Sharing
- Mobile App
Slack- Kanban
- File Sharing
- Task Management
- Docs
- Goals
- Workflow Automation
- Screen Sharing
- Mobile App
AI Capabilities
| AI Capabilities | Mattermost | Slack |
|---|---|---|
| AI Summary | Accelerate your mission critical workflow by integrating people, processes, tools and AI infrastructure on a resilient and adaptable platform. | Connect teams instantly with online messaging channels. Simplify project updates using team collaboration and business communication tools with Slack AI. |
| Ai Automation | ||
| Ai Summaries | ||
| AI Agents | ||
| MCP | ||
| Ai Writing |
Mattermost- AI Summary
- Accelerate your mission critical workflow by integrating people, processes, tools and AI infrastructure on a resilient and adaptable platform.
- Ai Automation
- Ai Summaries
- AI Agents
- MCP
- Ai Writing
Slack- AI Summary
- Connect teams instantly with online messaging channels. Simplify project updates using team collaboration and business communication tools with Slack AI.
- Ai Automation
- Ai Summaries
- AI Agents
- MCP
- Ai Writing
Security & Compliance
| Security & Compliance | Mattermost | Slack |
|---|---|---|
| GDPR | ||
| Single Sign-On (SSO) | ||
| HIPAA | ||
| FEDRAMP MODERATE |
Mattermost- GDPR
- Single Sign-On (SSO)
- HIPAA
- FEDRAMP MODERATE
Slack- GDPR
- Single Sign-On (SSO)
- HIPAA
- FEDRAMP MODERATE
Integrations
| Integrations | Mattermost | Slack |
|---|---|---|
| Popular integrations | ||
| Total integrations | 12+ | 12+ |
Mattermost- Popular integrations
- Total integrations
- 12+
Slack- Popular integrations
- Total integrations
- 12+
Media
| Media | Mattermost | Slack |
|---|---|---|
MattermostSlack100% 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.