OpenTTD is a clone of the Microprose game "Transport Tycoon Deluxe", a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features. Read more about OpenTTD v0.5.2 (Stable) (PSP Game Port)
PBPCat adds extra files into an EBOOT.PBP, and basically works as an alternative to bin2o in the way that it lets you store files within the eboot and allows you to read them back from within the program. Read more about PBPCat (PSP misc)