Best Linux alternatives to Microsoft Teams (old version with full calling features)

What is Microsoft Teams (old version with full calling features)?

Microsoft Teams was widely used by businesses and teams for workplace communication, combining chat, video conferencing, file sharing, and calling. The legacy desktop app supported full calling features like voicemail, dial pad, and PSTN calling, making it essential for remote work and internal collaboration. Many organizations relied on it for daily operations, especially during the shift to remote work.

The software is proprietary and part of the Microsoft 365 suite, typically requiring a paid subscription. Some features are available for free with limitations, but full calling and enterprise tools demand a business license. Microsoft does not charge separately for the Teams client itself—it's bundled with its broader productivity ecosystem.

Users seek Linux alternatives because the official Linux client for Teams lacks calling features and is no longer actively developed. Microsoft has shifted focus to the web app and newer Teams interface, leaving Linux desktop users without a fully functional native solution. This gap pushes users toward third-party tools that support real-time communication and calling on Linux.

What a replacement for Microsoft Teams (old version with full calling features) must do

• Chat with individuals and groups
• Video conferencing with screen sharing
• Voice calling with microphone and headset support
• Dial pad and PSTN calling support
• File sharing during conversations
• Cross-platform availability
• Integration with calendars or work tools

Can you run Microsoft Teams (old version with full calling features) on Linux?

There is a native Linux client for Microsoft Teams, but it's based on the older Electron app and lacks full calling features like dial pad and voicemail. The web version works in browsers like Chrome and Firefox and supports most features, including calling. It runs under Wine poorly—audio and video often fail. Proton and Bottles don't improve compatibility meaningfully. The web app is currently the most functional option on Linux.

Which alternative should you choose?

For calling and privacy-focused use, Jami works standalone but lacks centralized team management. Element suits teams wanting decentralized, secure chat and video via Matrix. Jitsi Meet is ideal for quick video meetings without accounts. Mattermost replaces Teams' chat and integrates with some calling tools. Franz can unify access to the Teams web app but doesn't add calling features. Choose based on whether you prioritize calling, integration, or self-hosting.

Moving your Microsoft Teams (old version with full calling features) files and habits

You can't directly export Teams chat history or call logs for use in other apps. Conversations and files saved in Teams stay within Microsoft's ecosystem unless manually copied. Most alternatives use different account systems and encryption models, so user migration requires re-onboarding. File sharing is compatible since documents are typically in common formats like PDF or DOCX, but real-time co-editing may not transfer unless the new app supports Office formats.