SGEdit - RPG Maker XP/VX Saved Game Editor
I got bored and didn't want to create a page for each one, some might not have a link, eh eh eh:
ClearJPG - Discard JPEG Image Data
CrowdZBM - Extract/View Crowd ZBM Graphic Files
Screen Saver - My lame screen saver
RawDIB - Rebuild bitmap image files that have no header
X-Code - Character Escape Sequence Encoder/Decoder
X-Tools - Unpack/Extract JAST/G-Collections Files
GTZPack - Unpack/Pack The Devil Inside Game Files