Mattermost

Mattermost

Open SourceMIT / AGPL-3.0

Secure Slack alternative for enterprises and DevOps teams

Difficulty
●● Medium
Last check
2026-08-10

Description

Mattermost is a self-hosted messaging platform designed as a secure alternative to Slack for enterprises. It offers channels, direct messages, file sharing, voice and video calls, and extensive DevOps integrations with Jira, GitLab, Jenkins, and many other tools. Mattermost supports Playbooks for incident management, Boards for project management, and provides a powerful API. The Team Edition is free and fully self-hostable.

Preview

Mattermost Preview

Platforms

WebLinuxWindowsmacOSAndroidiOSDocker

Replaces the following proprietary tools

WhatsAppMattermost
SlackMattermost
Microsoft TeamsMattermost

Self-Hosting

Mattermost can be self-hosted on your own infrastructure. Visit the official documentation for installation instructions.

Documentation →

Tags

#messenger#team-chat#devops#integrationen#enterprise#slack-alternative

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