A free app for Android, by epsxe software s.l..
A Playstation emulator for Android is called ePSXe (PSX and PSOne). It is a PC port of the well-known ePSXe. Very high compatibility (>99%), decent speed, and accurate sound are all provided by ePSXe. It is made for smartphones and tablets and supports 1-4 players, featuring a fun split-screen mode for two players.
Support for virtual touchscreen pads, hardware button mapping (for the Xperia Play, smartphones with keyboards or gamepads, and external Bluetooth or USB gamepads like the WiiMote, Sixaxis, Xbox 360, Moga, and Ipega), and analog sticks are all included. ePSXe features native support for Intel Atom X86 and ARM.ePSXe features HD improved visuals, including two OpenGL renderers and a 2x/4x software renderer. It also supports cheats and is compatible with the PC version’s savestates and memcards.
This is an extra plugin for Android’s ePSXe. If you want ePSXe to support OpenGL HD graphics, install it. Limited HD support means that using this plugin may cause some games to run slowly or malfunction.