mattermost ☆
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Description:
Open-source, self-hosted Slack-alternative
Type: Cask  |  Latest Version: 6.1.0@0  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  @mattermost  |  formulae.brew.sh
Category: Productivity
Tags: messaging collaboration chat team-communication open-source
Install: brew install --cask mattermost
About:
Mattermost is a flexible, open-source messaging platform designed for secure collaboration and workflow orchestration. It offers extensive customization options, robust security features, and seamless integration with developer tools. This self-hosted solution provides full control over data and infrastructure, making it ideal for organizations with strict compliance requirements.
Key Features:
  • End-to-end encryption and enterprise-grade security
  • Extensive plugin framework and API integrations
  • Real-time messaging, file sharing, and video calls
  • Customizable workflows and automation tools
  • On-premise and cloud deployment options
Use Cases:
  • Secure team communication for regulated industries
  • DevOps collaboration with integrated toolchains
  • Customer support and helpdesk operations
Alternatives:
  • Slack – Cloud-only, limited customization, higher cost for enterprise features
  • Discord – Consumer-focused, lacks enterprise security and compliance features
  • Rocket.Chat – Similar open-source model, different plugin ecosystem and UI approach
Version History
Detected Version Rev Change Commit
Mar 7, 2026 10:43am 6.1.0 0 VERSION_BUMP 9c059ae8
Jan 20, 2026 4:38pm 6.0.4 0 VERSION_BUMP f728e624
Jan 16, 2026 4:29pm 6.0.3 0 VERSION_BUMP d625cae1
Sep 10, 2025 8:08pm 5.13.1 0 VERSION_BUMP 29bd70d8
Aug 15, 2025 1:29pm 5.13.0 0 VERSION_BUMP 6541e95e
Dec 11, 2023 8:31pm 5.5.1 0 VERSION_BUMP 3ff938c7
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