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Microsoft Teams (free)Rocket.Chat Desktop
Freemium

Free edition available; Teams Essentials costs $4 per user per month, paid yearly.

 Free

The open-source software is available without a license fee. Hosting, hardware and…

Windows, macOS, Android, iOS, Web Windows, macOS, Linux
  • Chat, file sharing and meetings in one app
  • Meetings of up to 100 participants on the free tier
  • Provides desktop packages for Windows, macOS and Linux.
  • Requires a Microsoft account
  • Proprietary and tied to Microsoft services
  • Workspace access and server licensing are separate from the desktop client.
Downloadable app, Web application Downloadable app
Closed source Open source
License not stated License: MIT
Account needed Not stated if an account is needed
Needs internet Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.