http://jmsloadtester.marcel-sauer.de JMS Load Tester is a small command line based Java (>1.5) application to load test JMS brokers like SonicMQ, ActiveMQ, OpenJMS and others. It can be configured with a property file.
JDiag is an open source system information/diagnostics tool written in Java. It gathers information from various places in the system and places it into one log file for easy analysis by computer professionals.
Example Code Manager is an Eclipse-Plugin for managing sample code and sample data from repositories around the world. Mainly subversion repositories, but support for flat file or CVS repositories are planned.