itracker is a true open source issue tracking system. itracker is built using Java enterprise technology. itracker is a professional, easy to use, open, easy to integrate, fast, modular, customizable and scalable solution for all kinds of projects.
VMOSS (Volunteer Management Open Source Software) is a standalone volunteer management system, providing volunteer and project registration, monitoring, and reporting functionality. It was originally developed as part of the Sahana (LAMP) System.
Papermark is a Virtual Learning Environment for schools and other educational establishments. There are many features such as testing, registration, grading, assignments, user web pages, global home page, forums, mail, calendars, and resource management.