Open Source Groupware Software in Java

Collaboration server: appointments, contacts, tasks, email, documents; WebDAV, LDAP, iCal. Web and fat clients (Kontact, Evolution). OX App Suite.

Web-based CRM and groupware suite: collaboration, contacts, project/support tracking, eShop, CMS, webmail, library. Java; also on SourceForge.

J2EE collaboration platform: hot-deployable modules, workflow engine for project lifecycle. Scalable; runs in web app containers.

Java central-server app for sharing data between clients. Rendezvous client: chat, paint, desktop sharing, audio-video conferencing.

J2EE groupware: contacts, document sharing, articles and notes, calendar, webmail, virtual drive. Struts, Hibernate; Tomcat/JBoss/WebSphere.

J2EE app for team collaboration: task follow-up, status notifications, project tracking. Enterprise-oriented services.

CompreHensive collaborativE Framework: flexible web environment for distance learning and collaborative work. Predecessor of Sakai.

Java/J2EE collaborative forge: wiki, forum, trackers, SCMs, downloads, dropbox, forms. Per-project workspaces and fine-grained access.