Mattermost

Zero-trust collaboration, automation and AI in private cloud, self-hosted, and air-gapped environments. Built for national security, critical infrastructure, and regulated enterprises.

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Category	Team Chat & Messaging Platforms
Authentication	See docs
Pricing	See site
Website	https://mattermost.com/
Docs	https://docs.mattermost.com
Last checked	2026-10-14
As JSON	/api/v1/directory/mattermost.json