Item description:

Want to try the best multi-platform PSP emulator on the market? PPSSPP 0.9.1 offers the speed and compatibility that you've been dreaming of!
The PSP has become a legendary handheld thanks to the community we have right here at QJ. If you no longer have your now aging system, this little download will help you play those games on almost any device you can imagine from Windows to Mac, to iOS, to Blackberry. The following download is for Windows and Android iterations, but you can find several other options at the source link below if need be.

Version 0.9.1
0.9 was a big release and a couple of bad bugs slipped through, including a crash bug in the settings menu and a bug that turned on error reporting for everyone, which is a bit much for our server. So 0.9.1 is just a boring bugfix release, but please install it! :)

0.9

-Much improved control mapping, and autoconfig for a few devices like Shield
-Large speed boosts in many games
-Improved touchscreen control latency, important for rhythm games
-Huge improvements to our internal PSP debugger by Kingcom!
-A number of new games became compatible, such as Final Fantasy Tactics which just has some audio issues left.
-A completely redesigned user interface, unlike the previous static one this one can grow with the emulator and has keyboard/controller navigation support, for the full lean-back experience!
-Improved frameskipping, increasing playability on slower devices.

Source