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Tool profile · Team Chat

Mattermost

Top pick

Self-hosted team chat built for security-conscious orgs.

88
sovereignty

Mattermost is an open-source, self-hostable Slack alternative with strong security and compliance features, popular with engineering and defense/regulated teams that need to own their data.

OPEN SOURCEAGPL-3.0SELF-HOSTLOCAL-FIRST
Website ↗Source ↗Docs ↗
LicenseAGPL-3.0
PricingFree self-host; paid Enterprise
Open sourceYes
Self-hostableYes
Local-first dataYes

What it does well

  • +Purpose-built self-hosted Slack replacement
  • +Strong security/compliance story
  • +Familiar channel UX

Where it falls short

  • −You operate the server
  • −Some features are Enterprise-only

Mattermost as an alternative to

Where Mattermost shows up in our comparisons, and how it ranked.

Alternatives to Slack

Our pick

3 options compared · Salesforce

Mattermost head-to-head

Straight comparisons against the tools people weigh it against.

Mattermost vs Zulip→Mattermost vs Rocket.Chat→
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