Tux Guitar
Power Tab (not sure)
Proud member of r0k 4 Chr15t club, PM T3hRav3n/christianbassis to join.

The Rig:
Dean Icon
Cimar strat-copy
Ibanez GRX-40
Dean Edge-1 Bass
Digitech RpX400
Peavey Rage 158

Creater of Tuba players united, pm to join.
Power Tab is free. It's probably the most common free software, unless you count pirated Guitar Pro. I've never heard of Tux Guitar.
That's cool. I wouldn't want to pay just to tab music...
Thanks for the info werty22. I'm downloading Power Tab right now
Tux guitar supposedly plays power tabs and guitar pro files and is free, or so I've been told.
Quote by Mia (Pulp Fiction)
Why do we feel it's necessary to yak about bullsh*t in order to be comfortable?

That's when you know you found somebody special. When you can just shut the f*ck up for a minute, and comfortably share silence.