BugTracker
The Bugtracker is a complete bug/issue management system, built around MySQL utilizing Java Servlets for a web based front end. This will soon grow into a complete project development architecture encapsulating project management, issue tracking, QA, etc.

Elips
ELIPS for ELectronic Issue Processing Software is a tool enabling the user to manage different kind of issues, ie : bug correction request, task processing request, enhancement request, work processing request, support request.

ITracker
ITracker is a Java J2EE issue tracking system designed to support multiple projects with independent user bases. It supports features such as multiple versions and project components, detailed histories, per project user permissions and multiple email notifications. A brief feature list is available. Also a new ITracker roadmap is now available that provides details on the current features, and also describes features and implementation details for future releases.

Scarab
The goal of the Scarab project is to build an Artifact tracking system.