Mattermost
self-hosted team chat
79/100Excellent fit
on a balanced view of all values
Open: Strong. Mattermost's primary repository is public and the docs describe Team Edition as free-to-use open source. source↗ 2026
3 independent sourcesdocs.mattermost.com · GitHub · mattermost.com
No ads · No tracking · No brand pays us
An honest, sourced verdict from Conscious Consuming. Choose by your values, not by who pays.