Feature-Rich, Good Looking, and Free GTD App For Windows?

Even though the Mac seems to be the platform of choice for productivity zealots, it's a shame that there are no comprehensive GTD apps for Windows. I am trying to use Accomplice (not designed for GTD, but still good), I looked at Thinking Rock (ugly), and shudered at some other apps (and their price tags). Is there a tool pretty much like iGTD, just for Windows, and that costs nothing?