Want
Want: A Delphi-friendly build management tool. If you developing Windows applications using Delphi and you're familiar with ant, you might be interested in want. Want is a port of ant to Delphi and runs under Windows (and will probably be ported to Kylix soon). GPL'd at that.
The author of Want, Juancarlo Añez, has also developed a Delphi version of JUnit appropriately called DUnit. A great framework for unit testing your Delphi code.