Automato is a LUA-based automation program which is useful for any automation task which primarily involves screen scraping and sending mouse clicks, with a special focus on automating video games. Automato was originally developed for growing vegetables in A Tale in the Desert and was previously called VeggieTales.
The Dashing Strike Image Processor for Games is a utility that can fix bad alpha channels (those that cause problems when used with GPU texture filtering) in PNG images files exported from tools like PhotoShop, among other things.
Renamer is a simple tool to open a directory as a text file in your favorite text editor, allowing complicated bulk renames using the tools you're already most familiar with.
ScreenShotTimer20s is a utility that takes screenshots at regular intervals, with the intention of using them for doing things like generating time-lapse videos of game development.