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Canoo WebTest is a free open source tool for automated testing of web applications.
It calls web pages and verifies results, giving comprehensive reports on success and failure. The White Paper provides an overview of the features and the design rationale. Detailed information is provided in the Manual Overview as well as the Install and Troubleshooting guides.
Simian (Similarity Analyser) identifies duplication in Java, C#, C, C++, COBOL, Ruby, JSP, ASP, HTML, XML, Visual Basic source code and even plain text files. In fact, simian can be used on any human readable files such as ini files, deployment descriptor
I participated in the design and development of a couple of concurrency libraries for shared-memory multiprocessors long before such machines were popular. So when I started using java.util.concurrent I was already somewhat comfortable with the concepts.
J. Gil, and I. Maman. OOPSLA '05: Proceedings of the 20th annual ACM SIGPLAN conference on Object oriented programming, systems, languages, and applications, page 97--116. San Diego, CA, USA, ACM, (2005)