ManiacX has released the PSP Easy Disassembler, which is a GUI for Booster's PSP disassembling program.

For those who don't know what this does, a disassembler is a computer program that translates the machine language in a file or program into the assembly language used to create it. Programmers use it mostly for reverse-engineering purposes. That being said, it's not going to be the kind of homebrew that laymen will be able to use.

ManiacX notes, however, that there's a chance he might include this in the next release of CSP Development Studio, so programmers should keep their fingers crossed for that. Other than that, please remember that you'll need a 2.0 .Net Framework for this app to run.