Eliza - simple framework for BDD development and acceptance testing.
Null dereference verifier for Java Programs
Source Code Analyzer
jMINT - Java Mutation for Integration Testing
Image based Test Automation tool (Java) - Test ANYthing, ANYwhere
DATA Gen™ - Test Data Generator to generate realistic test data.
Functional Test Automation tool for pure AS 3.0 SWF and Flash Games
Software Quality Assurance Toolkit
Extended Robot Class
An alternative to JMX