PPSSPP is a PSP emulator that allows you to enjoy playing PSP games in full HD on your PC as well as on your Android device.

Using this emulator enables you to upscale textures that would typically be too blurry since they were designed for the small screen of the original PSP. This also will be evident even on your newer devices that can often run at 2x the original resolution.

PPSSPP Features:

-Play in HD resolutions and more
-Play on a tablet for big-screen mobile gaming
-Customize on-screen touch controls or use an external controller or keyboard
-Save and restore game state anywhere, anytime
-Crank up the anisotropic filtering and texture scaling
-Continue where you left off by transferring saves from your real PSP

We marked it as freemium as there is a Gold PPSSPP option which provides:

-Faster emulation and more platforms than any other PSP emulator
-Save states
-Enhanced high-resolution graphics with upscaled textures
-Turbo button for those slow-to-play RPGs

PPSSPP Gold also:

-Makes you feel good.
-Has a fancy golden icon you can show off to your friends.
-Most importantly, it lets the author (Henrik) spend more time working on the emulator.