It looks like TuxGuitar hasn't been updated since 2009? I still have to give it a try, haven't had the time yet.
It hasn't been updated, but the feature set of Guitar Pro hasn't changed all that much since GP 4 or 5, I don't think. It's quite competent, and runs almost everywhere. Oh, and it's free. The big down fall is it can't open gpx files.
...EOF can't properly compete with a program that is designed for creating guitar tablature and nothing else, when you compare some of the really specialized features like the chord creator in Guitar Pro...
Yeah, I try not to use EOF for editing because TG and GP are so much better at it. Hats off to you, raynebc, for making the import process so painless.