The OWASP ZAP core project
Software Monitoring Framework
Marathon supports testing of Java/Swing and Java/Fx applications.
PyUnit and PyDev extensions for arbitrary Executables
Generate charts and reports using data gathered in log files
Java based CPU stress testing tool
Records, edits and executes The Grinder scripts
A library for monitoring the garbage collection of app objects
Library tools to collect timing in Java, C, C++
xpath plugin for jmeter with local namespace prefixes
SarBox helps user to parse or analyze sar data