PSPMud is a mud client for the psp, based on Danzel’s Peldet 0.8.

Other release notes:

use D-Pad for basic movement (North, East, South and West)
Square = Enter Key (needed for scrolling pages)
Circle = OSK for entering your commands

you can connect to servers either by manually entering their address,
or by entering them into the provided servers.txt, so you only
have to choose them at programm startup.

more features in upcoming versions

PSPMud is compiled for Kernel 3.x

http://forums.qj.net/f-psp-development-forum-11/t-releasepspmud011-134094.html