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BetterOpenSource

Mattermost vs Rocket.Chat

A side-by-side comparison of two open-source tools to help you choose the right one.

Feature
SummarySecure team messaging for technical teams.A customizable communications platform.
GitHub stars33K42K
LicenseSource AvailableMIT
LanguageGoTypeScript
PricingFree & Open SourceFree & Open Source
Self-hostable
ReplacesSlack, Microsoft TeamsSlack, Microsoft Teams
Rating4.5 / 54.4 / 5

Mattermost features

  • Channels, threads, and direct messages
  • Slash commands and integrations
  • Playbooks for incident response
  • SSO, LDAP, and compliance exports
  • Self-hosted with full data control

Rocket.Chat features

  • Team chat with channels and threads
  • Omnichannel customer support (email, WhatsApp, SMS)
  • Voice and video conferencing
  • Bots, apps, and integrations marketplace
  • Federation and self-hosting

Mattermostpros & cons

Pros

  • Strong security and compliance
  • Great for DevOps workflows
  • On-prem or private cloud

Cons

  • Some features are enterprise-tier
  • Setup heavier than hosted chat

Rocket.Chatpros & cons

Pros

  • Doubles as a customer engagement hub
  • Highly customizable and extensible
  • Large ecosystem

Cons

  • Broad feature set adds complexity
  • Resource-hungry at scale

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