Rob_PSP has just released PSP-PDA v1.2 for the PSP. PSP-PDA is a PDA program with a notepad, music player, image viewer, address book, calendar, calculator, and clock. Here are the changes to this version:

Added: Music Playlist, right trigger switches between file manager and playlist.
Added: P-Sprint keyboard emulator by Arwin
Added: Stopwatch and Timer
Added: Goto Month in Calendar
Added: View Week and Month Events in Calendar
Added: Theme support including theme by Pochi
Added: Additional icons by Cancan
Modified: Keyboard input now wraps around
Modified: File->Save now also manually saves Address book and Calendar
Fixed: Notepad carriage return bug
Fixed: Calendar event bug