Mattermost
An open-source, self-hosted team collaboration platform that serves as a secure alternative to Slack with integrated communication and workflow tools.
About Mattermost
Mattermost is an open core collaboration platform designed for organizations seeking a self-hosted alternative to proprietary chat solutions like Slack. Built with Go and React, it runs as a single Linux binary with PostgreSQL as its database backend. The platform combines real-time messaging with advanced collaboration features including workflow automation, voice calling, screen sharing, and AI integration. Released monthly under an MIT license, Mattermost provides teams with full control over their communication infrastructure while maintaining enterprise-grade security and compliance capabilities.
Key Features
- Self-hosted deployment with full data control and privacy
- Real-time team messaging and chat functionality
- Integrated voice calling and screen sharing capabilities
- Workflow automation tools for streamlined processes
- AI integration for enhanced productivity
- Cross-platform support with mobile and desktop applications
- Enterprise-grade security and compliance features
- Extensive API and plugin ecosystem for customization
- Single Linux binary deployment for easy installation
- Monthly releases under MIT open source license