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Mattermost
Secure team collaboration platform. Channels, threads, integrations, and playbooks.
About Mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. It provides workplace messaging, file sharing, integrations, and workflow automation in a single platform that can be self-hosted on your infrastructure.
Key Features
✓ Channels & direct messaging
✓ Threaded conversations
✓ File sharing & search
✓ Playbooks for incident response
✓ 150+ integrations
✓ High availability & clustering
Why choose Mattermost?
Mattermost is an open source alternative to Slack, Teams. Licensed under MIT + EE, it gives you full access to the source code and the freedom to modify, self-host, and contribute. You can deploy it on your own servers for complete data ownership and privacy.