UnitTH is a lightweight application for generating a comprehensive HTML test history report out of a set of parsed JUnit XML test reports. The historical report collects all JUnit reports and makes it easy to navigate between them. In addition, the report contains a large number of sortable test statistics for test runs, individual test modules, and test cases. A number of graphs are generated and useful trends can very easily be spotted. There are two intended usages for UnitTH. First, it can be useful for unstable and sporadically failing test suites, for which it might sometimes be necessary to run the suite multiple times to be able to make a solid judgment regarding the outcome of the test runs. Second, it can be used for test history reporting in continuous integration like projects.