Open Source Java Web Conferencing Software

BigBlueButton is an open-source virtual classroom platform built to help teachers teach and learners learn online. It enables real-time collaboration through audio, video, slide presentations, screen sharing, and interactive whiteboards. Educators can actively engage students using polls, emojis, shared notes, multi-user whiteboards, and breakout rooms. The platform includes a Learning Analytics Dashboard that provides moderators with live insights into participant activity and engagement. BigBlueButton also supports session recording and playback, making it ideal for asynchronous learning and content reuse. Designed primarily for education, it adapts seamlessly to online tutoring, flipped classrooms, group collaboration, and large-scale virtual classes.

This is an eclipse project for common java platform (API), to use in RTMP client development.

JIM is a cross-platform instant messenger. Based on TCP/IP protocol. Supports conferencing as well as private messages.

OpenSeaPad is a Etherpad Fork with improvments on the original Etherpad Software

[es ] Aplicación web central para particulares. [en ] Core web application for individuals. [fr] Application Web centrale pour les personnes. [pt] Central de aplicação web para indivíduos. [ar] المركزي تطبيق ويب للأفراد

Remilama is a online review tool. It will allow everyone to view the same document and disscussion about it in real time.

open source .net/php framework.