This article shows how the idea of continuous software testing [23] of a world wide working group can be well integrated into the Grid Computing paradigm using the Globus Toolkit [14]. This kind of testing assumes a lot of computational resources provided by a regression test center. The interaction with the test center is done through web services implemented by the new developed Unit Test Center Grid Web Service (UTCGWS). UTCGWS is the interface to the developer IDEs and does compiling, deploying, distributing regression test and information managing. For the distribution of unit tests in a grid environment a simple distribution algorithm has been developed.