PPSSPP is the easiest to use, has the best compatibility and best performance. So far, PPSSPP is the best PSP emulator software.
Now, you can play PSP games on mobile phones or tablets. It has a ton of games and Sony even switched some PlayStation games into the purchase system. The Sony PSP is one of the longest-running handheld sonsole games ever, spanning seven years with various new models released over time.