If I were a stronger coder, I'd develop an all-in-one keyword research tool that pulls from as many openly available APIs as possible, and features an easy export-into-text feature like WordTracker's. The SEOBook tool comes very close, but lacks when it's time to export.

There are a couple of good, free tools mentioned above, but the outputs can be so very different. Wouldn't it be great to get all your 'shopping' done on one site?