Open-source team collaboration platform
Visit WebsiteThe Bottom Line
Entry price
Free plan available, paid tiers above
Biggest pro
Open source Slack alternative
Biggest con
Less polished than Slack
TL;DR - Mattermost
- Mattermost is an open-source messaging platform for secure team collaboration
- It provides channels, threads, and integrations with self-hosting options
- Free self-hosted, Cloud from $10/user/month
What is Mattermost?
Available on: Web, iOS, Android, Windows, macOS, Linux
Pros & Cons
Pros
- Open source Slack alternative
- Self-hostable
- Good for compliance
- No per-user cloud cost
- Customizable
Cons
- Less polished than Slack
- Smaller integration library
- Self-hosting required for best value
- Learning curve
- Community smaller
Ratings Across the Web
What people say
“Updates can be a probem, and sometimes user's options for 'auto update check' and 'system tray color' seem to get lost.”via G2
“Ive used mattermost for 2.4 years now and it was a great experience”via Capterra
“Screen sharing, calling and video conferencing option is not available which makes us dependent on other apps.”via SourceForge
Ratings aggregated from independent review platforms. Learn more
Key Features
Pricing Plans
Free TrialPricing checked Jul 31, 2026
Free
- Self-hosted
- Up to 250 users
- Basic messaging
Professional
$10/user/month
- AD/LDAP sync
- SSO
- Guest accounts
Enterprise
Custom
- Custom compliance
- EMM support
- 24/7 support
Is Mattermost worth the price?
Mattermost's pricing is fair, offering a generous Free tier for small teams.
The Professional tier at $10/user/month is competitive for essential enterprise features. It's best suited for organizations prioritizing self-hosting and open-source flexibility.
Hidden Costs & Gotchas
Self-hosting requires infrastructure costs
Enterprise tier price is custom, can be high
Potential for additional plugin costs
Support for Free tier is community-based
How Mattermost Compares to Competitors
Compared to Slack, which starts around $8.75/user/month for similar features, Mattermost Professional at $10/user/month is slightly higher but offers self-hosting. Discord's Nitro is cheaper at $9.99/month for individual users, but not directly comparable for team collaboration features.
How Mattermost's pricing compares
At $10/mo, Mattermost is the most premium of its 4 direct competitors.
Entry paid plan, monthly. Pricing checked Jul 31, 2026.
Reviews
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Across 596 verified user reviews on G2, Capterra, SourceForge
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Best Mattermost Alternatives
Top alternatives based on features, pricing, and user needs.
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Open source content collaboration platform for secure, self-hosted data control and remote teamwork.
AI-first team collaboration and instant messaging app for enterprises.
Still deciding?
Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.
Explore More
Mattermost FAQ
How does Mattermost ensure data privacy for team communications?
Which teams benefit most from using Mattermost?
How is Mattermost priced?
Can Mattermost be customized to fit specific organizational needs?
What kind of trade-offs should users consider when choosing Mattermost over a competitor like Slack?
Does Mattermost support enterprise-level features?
Source: mattermost.com