Instead of Mattermost, try one of these 11.
Every alternative is lined up against Mattermost on what people actually switch for: price, open source, self-hosting, offline use and platforms. Mattermost sits in the first row, so you can see what you give up.
How to read this. “Yes” means fully supported by the maker. “Partial” means it works with caveats. Likes reflect community popularity; vendors can’t pay for them or for placement. How we compare.
Mattermost alternatives at a glance
Mattermost is a freemium team chat app (from $10/seat). We compared 11 alternatives: 7 are open source, 5 are completely free, 6 can be self-hosted and 0 work fully offline. The most popular is Slack, with 4k likes.
Decentralised, encrypted chat built on the Matrix protocol.
Free · Open source · Self‑hostableOpen-source communications platform with omnichannel support.
Freemium · Open source · Self‑hostableThreaded team chat that keeps busy conversations organised.
Freemium · Open source · Self‑hostable