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
Comparison Summary
Generated strictly from verified fields — never a subjective ranking.
Strongest Security
Mattermost
Mattermost lists the most verified security and compliance certifications (10).
Overview
| Overview | Mattermost | Slack |
|---|---|---|
| Best for | Enterprise, Mid-Market, Small Team | Enterprise |
| Starting price | Free | Free |
| Free plan | Yes | Yes |
| Deployment | On-Premise, Cloud / SaaS, Hybrid, Self-Hosted | Cloud / SaaS |
Mattermost- Best for
- Enterprise, Mid-Market, Small Team
- Starting price
- Free
- Free plan
- Yes
- Deployment
- On-Premise, Cloud / SaaS, Hybrid, Self-Hosted
Slack- Best for
- Enterprise
- Starting price
- Free
- Free plan
- Yes
- Deployment
- Cloud / SaaS
Pricing
| Pricing | Mattermost | Slack |
|---|---|---|
| Free plan | Yes | Yes |
| Paid plans | Free | Free |
| Number of plans | 0 | 3 |
Mattermost- Free plan
- Yes
- Paid plans
- Free
- Number of plans
- 0
Slack- Free plan
- Yes
- Paid plans
- Free
- Number of plans
- 3
Key Features
| Key Features | Mattermost | Slack |
|---|---|---|
| Kanban | ||
| Video Meetings | ||
| File Sharing | ||
| Task Management | ||
| Docs | ||
| Goals | ||
| Workflow Automation | ||
| Chat Messaging |
Mattermost- Kanban
- Video Meetings
- File Sharing
- Task Management
- Docs
- Goals
- Workflow Automation
- Chat Messaging
Slack- Kanban
- Video Meetings
- File Sharing
- Task Management
- Docs
- Goals
- Workflow Automation
- Chat Messaging
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. |
| Ai Assistant | ||
| Ai Meeting Notes | ||
| Ai Writing | ||
| Ai Search | ||
| Ai Automation |
Mattermost- AI Summary
- Accelerate your mission critical workflow by integrating people, processes, tools and AI infrastructure on a resilient and adaptable platform.
- Ai Assistant
- Ai Meeting Notes
- Ai Writing
- Ai Search
- Ai Automation
Slack- AI Summary
- Connect teams instantly with online messaging channels.
- Ai Assistant
- Ai Meeting Notes
- Ai Writing
- Ai Search
- Ai Automation
Security & Compliance
| Security & Compliance | Mattermost | Slack |
|---|---|---|
| SOC 2 TYPE II | ||
| ISO 27001 | ||
| HIPAA | ||
| GDPR | ||
| FEDRAMP MODERATE | ||
| ISO 27017 | ||
| PCI DSS | ||
| ISO 27018 | ||
| CSA STAR | ||
| Single Sign-On (SSO) |
Mattermost- SOC 2 TYPE II
- ISO 27001
- HIPAA
- GDPR
- FEDRAMP MODERATE
- ISO 27017
- PCI DSS
- ISO 27018
- CSA STAR
- Single Sign-On (SSO)
Slack- SOC 2 TYPE II
- ISO 27001
- HIPAA
- GDPR
- FEDRAMP MODERATE
- ISO 27017
- PCI DSS
- ISO 27018
- CSA STAR
- Single Sign-On (SSO)
Compliance & Certifications
| Compliance & Certifications | Mattermost | Slack |
|---|---|---|
| SOC 2 TYPE II | ||
| ISO 27001 | ||
| HIPAA | ||
| GDPR | ||
| FEDRAMP MODERATE | ||
| ISO 27017 | ||
| PCI DSS | ||
| ISO 27018 | ||
| CSA STAR |
Mattermost- SOC 2 TYPE II
- ISO 27001
- HIPAA
- GDPR
- FEDRAMP MODERATE
- ISO 27017
- PCI DSS
- ISO 27018
- CSA STAR
Slack- SOC 2 TYPE II
- ISO 27001
- HIPAA
- GDPR
- FEDRAMP MODERATE
- ISO 27017
- PCI DSS
- ISO 27018
- CSA STAR
Integrations
| Integrations | Mattermost | Slack |
|---|---|---|
| Popular integrations | ||
| Total integrations | 0+ | 0+ |
Mattermost- Popular integrations
- Total integrations
- 0+
Slack- Popular integrations
- Total integrations
- 0+
Supported Platforms
| Supported Platforms | Mattermost | Slack |
|---|---|---|
| macOS | ||
| Linux | ||
| Android | ||
| Mac | ||
| Web | ||
| Windows | ||
| iOS |
Mattermost- macOS
- Linux
- Android
- Mac
- Web
- Windows
- iOS
Slack- macOS
- Linux
- Android
- Mac
- Web
- Windows
- iOS
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.