Nextcloud Talk — #1 Alternative to Microsoft Teams
On-premise chat, screen sharing, and WebRTC video conferencing inside Nextcloud
Nextcloud Talk delivers self-hosted team channels, SIP phone bridge dial-in, webinar lobbies, and live collaborative document editing in the same sovereign workspace as Nextcloud Files and Groupware.
License: AGPL-3.0 · Pricing: Free & Open Source · Compare all Microsoft Teams alternatives · Official Website