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Campfire vs Mattermost

The same facts for both, read from GitHub every night, and the relation a person reviewed.

CampfireMattermost
LanguageRubyTypeScript
LicenceMITOther
Stars4.7k39k
Latestv1.5.1v11.11.1
Last push2026-10-062026-10-06
Release cadenceabout 2 days between releasestoo few releases
Active contributors12 commit authors on the default branch in the last 90 days50+ commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace Slack. Alternatives to Slack →

    PartialCampfireRooms, direct messages, file attachments and bots for one organisation, without threads or calls.

    Full replacementMattermostChannels, threads and calls on your own server, with an importer for Slack exports.