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Microsoft Teams vs Mattermost

A side-by-side look at Microsoft Teams (the paid SaaS) and Mattermost (the open source alternative). Use this page to decide if the switch fits your team and workflow.

Microsoft Teams Mattermost
Tagline Video, chat and collaboration bundled with Microsoft 365. Slack-style open source team messaging.
License Proprietary SaaS AGPL-3.0 / Apache-2.0 (modules)
Pricing Included in Microsoft 365 from $6.99/month; Teams Essentials from $4/user/month standalone. Free to self-host · optional paid hosted plan
Self-host option No Yes — difficulty 3/5
Hosted cloud available Yes (only option) Yes
Desktop apps Varies by product Windows, macOS, Linux
Mobile apps Official apps typically available iOS, Android
Ad slot — between tables

Best for

Enterprise teams needing Teams-like structure with compliance controls.

Mattermost strengths

  • Familiar Slack-like UX.
  • Strong self-hosting story and enterprise features.
  • Good permission and compliance controls.

Mattermost weaknesses

  • Some advanced features require paid tier.
  • Mobile app performance is acceptable but not stellar.
  • Larger install footprint than lightweight chats.

What's the catch with Microsoft Teams?

  • Deeply tied to Microsoft ecosystem.
  • Resource-heavy desktop client.
  • Chat and meeting features sprawl across tabs.

Still unsure?

Check the full list of alternatives to Microsoft Teams: see Microsoft Teams alternatives, or learn more about Mattermost on its project page.