Mattermost

Open source Slack alternative for developers

OPENSOURCESeries CEst. 2015500+ employeesPalo Alto

Mattermost is an open-source, self-hostable collaboration platform for developer and engineering teams. Channels, threads, calls, workflows, and integrations — without the data leaving your network. Used by US DoD, NASA, and thousands of enterprises.

Total Raised$65M

a16zRedpoint VenturesS28 Capital

Founders

Ian Tien

Corey Hulen

View on GitHub

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