Openfire

XMPP server implementation in Java.

XMPP instant messaging server.

Mobile messaging platform with a focus on performance and scalability.

All-in-one Dockerized easy XMPP solution, including web admin and clients.

Feature-rich and easy to configure XMPP server.

Supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen. Instructors can engage remote students with polling, emojis, and breakout rooms.