Here I will keep a list of useful open source projects we have experience in:
Liferay is an open source J2EE portal. Visit http://www.liferay.com for more details. Runs with the most known databases MySQL, SQL Server, Oracle and can be deployed to Tomcat, Glassfish, JBoss.
eHour Timesheet Management
eHour is a java open source webbased time tracking tool for companies and organizations who need accurate information on how much time is spend on projects by their people.