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Launched October 7, 2026
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Secure collaboration for technical teams
Mattermost is an open-source collaboration platform for technical and security-focused organizations. It targets groups such as defense and national security agencies, critical infrastructure operators and regulated enterprises that need tight control over where their communications live. The platform combines team messaging with workflow automation and AI features, and it is built around a zero-trust security approach. Unlike many chat tools that only run as a public cloud service, Mattermost can be deployed in a private cloud, on self-managed servers or in fully air-gapped networks. A range of integrations and deployment options lets organizations adapt it to their own operational and compliance needs.
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