Open-source, self-hosted, Slack alternative
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Why people like Mattermost
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Mattermost is modern communication from behind your firewall.

Mattermost's Features
  • All your team communication in one place, searchable and accessible anywhere
  • Slack-compatible, not Slack-limited. Imports Slack channels, users and themes. Offers Slack-compatible webhooks and integrations including Hubot, Jenkins, GitLab and others
  • Self-host ready with System Console and IT admin tools for managing dozens of team sites. Installs with Linux binary, plus Docker, Heroku, AWS, Azure and Cloud Foundry options

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