Sprite Font Builder is a cross-platform application for generating fancy bitmap fonts for use primarily in games built with engines and frameworks that support Bitmap Fonts such as Cocos2d.
The Grimrock Model Toolkit is a mod-tool for the Legend of Grimrock. The GMT makes it easy to re-texture models in Legend of Grimrock Mods and a large number of the rextured and modder-created models on the Legend of Grimrock Mod Nexus were made using this tool.