Web Directory

» Atlassian Clover
   Offers an analysis tool featuring statement, method, and branch coverage. [Free for Open Source and non-commercial projects]
   http://www.atlassian.com/software/clover/

» EMMA
   Reports on class, method, basic block, and line coverage (text, HTML, and XML). [Open source, Common Public License]
   http://emma.sourceforge.net/

» Hansel
   JUnit extension that adds code coverage testing to the framework. [BSDL]
   http://hansel.sourceforge.net/

» Java Test Coverage Tool
   A tool for collection test coverage on large Java Systems. Works with Java, Realtime Java, and embedded JVMs. [Commercial]
   http://www.semdesigns.com/Products/TestCoverage/JavaTestCoverage.html

» Open Source Code Coverage Tools in Java
   Lists tools with links and a short description.
   http://java-source.net/open-source/code-coverage

» alphaWorks : FoCuS
   Implements the functional coverage methodology, providing detailed coverage information.
   http://www.alphaworks.ibm.com/tech/focus/

» jcoverage
   Identifies how many times each line of code in an application has been executed. Commercial support available. [Open source, GPL]
   http://jcoverage.com/