PSXChecker Contrary to the name, PSXChecker is not what you may think... It's in no way used for PSX/PSOne-emulated games. Xager's PSXChecker is actually a homebrew app for testing and diagnosing certain system routines of your handheld - make sure the buttons are in working order, test the left and right audio channels, and look for, even maybe repairing, stuck pixels
PSXReality Memory Stick Tester
PSP homebrew developer mavy has just informed us of the release of his new app PSXReality Memory Stick Tester (PSXR-MSTester). Based on MSTest from MIB42 (although, according to mavy, he could only find MIB42's .PBP), this app runs a standard batch of tests to test throughput and standard deviation from a memory stick
Test My Controls
If you want to find out whether or not it's time to replace that PSP analog stick, then here's a little application that might help you decide what to do with it. Developer Johnny McKinney has come up with a nifty app which helps test out your analog stick's sensitivity and rates whether or not it may need replacing.
Test My Controls v2
Test My Controls
Constant use is grounds for wear and tear, and that's no exception even for the multi-capable Sony PlayStation Portable. Homebrew developer Johnny McKinney released a homebrew application to diagnose the PSP's controls. Test My Controls version 1.5 - perhaps a C++ rehash of Control Tester v1
The New PSP Game Maker (Gamma release)
It seems that there's an on-going friendly competition between two homebrew developers over at QJ Forums. A couple of days ago, Re_AnimAte released a fairly good version of the application known as The PSP Game Maker. In a nut shell, it is a working compiler and tester for Lua games made in C#