mattermost/mattermost
Summary
Mattermost is an open-core, self-hosted collaboration platform offering chat, workflow automation, voice calling, screen sharing, and AI integration. The repository is the primary source for core development, implemented in Go and React, and designed to run as a single Linux binary with PostgreSQL as a backend. It emphasizes cloud and on-prem deployment options, extensive use cases (DevSecOps, Incident Resolution, IT Service Desk), and a thriving ecosystem of integrations and clients. The page also highlights security bulletins, community involvement, and comprehensive documentation.