com tree , by Melissa Schrumpf, is a COM object browser using TCOM and the BWidget tree widget. Extremely useful in poking around in COM object structures. Has the ability to execute methods within the structure being browsed.
It's a bit tricky to start: You are prompted to enter a target (of course you don't know the precise name), but if you leave the field empty and just click ok you are offered a pick list.