Jitsi

Jitsi Desktop provides encrypted audio‑ and video‑calling, instant messaging, desktop sharing, and file transfer within a single application. It supports ZRTP and SRTP for end‑to‑end encryption, allowing users to start private conversations and secure video conferences with contacts on XMPP or SIP clients. The software also lets participants view and interact with a shared desktop regardless of the operating system being used.

The program runs on Windows, macOS, and Linux, with community‑maintained instructions for building on FreeBSD. It integrates with popular instant‑messaging networks and can be extended through its open‑source code, which is released under the Apache 2.0 license. Documentation, FAQs, and a community forum are available to help users and developers troubleshoot and contribute.

Jitsi Desktop is aimed at individuals and groups that need a free, cross‑platform solution for secure video communication and collaborative desktop sharing without reliance on proprietary services.