Super PSP Emulator vs Gold version PPSSPP

[Tabman]

(09-17-2013 11:22 AM)stodag Wrote:  What he's doing is totally legal.. as its open source, lame though..

Open source doesn't necessarily means that you can modify and/or distribute the work in question for commercial gains.
But, as ppsspp is licensed under GPL 2.0, modifying and selling ppsspp is indeed allowed (still not a nice move, though). But, and this is very important, you must (among other things) make the source code of the modification available to the public.
Otherwise, at least in this case, it's just illegal distribution of software on a commercial level. And that can get expensive.