Mattermost
Open-source, self-hostable team messaging
82
Alternative Score74
AI Score78
Popularity86
Trust ScoreThe verdict
Mattermost is a freemium (free plan + paid tiers) saas tool, best suited for security-focused teams, self-hosting, developers. Below you'll find its key features, pricing, pros & cons, and the 1 best Mattermost alternatives — compared in one place.
Best for:Security-focused teamsSelf-hostingDevelopers
Last updated: August 26, 2026
About Mattermost
AI Summary
Mattermost — Open-source, self-hostable team messaging. Mattermost is a Slack-style messaging platform you can self-host for full control over your data, popular with security-conscious and technical teams..
Mattermost is a Slack-style messaging platform you can self-host for full control over your data, popular with security-conscious and technical teams.
Best for:Security-focused teamsSelf-hostingDevelopers
Pros
- Self-hostable
- Open source
- Data control
Cons
- Setup/maintenance effort