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
Pricing: Free plan available
Best for: Growing teams
Score: 84/100
Pricing
Freemium
View pricing Mattermost offers a free plan with paid upgrades.
About Mattermost
Mattermost provides team messaging you can self-host. Slack alternative for organizations that need data control—chat on your infrastructure.
Self-hosting keeps conversations private. The features match commercial alternatives. Enterprise features exist.
Organizations needing private team chat choose Mattermost for self-hosted messaging.
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Mattermost FAQ
Mattermost Team Edition is free and open source for unlimited users. Enterprise plans start at $10 per user per month.
Mattermost is a self-hosted team collaboration platform. It's an open source alternative to Slack that you can run on your own servers for complete data control.
Mattermost can be self-hosted giving you data sovereignty. Slack is cloud-only but more polished. Choose Mattermost if you need on-premises deployment or strict compliance.