Turska is one of these things I have been tinkering with, but for some reason have neglected to mention here until now. It is a silly little UI/framework library meant to be small and easy to use, mainly aimed for games which have modest UI requirements anyway.
The very first version of the library was featured in Truck Dismount™ back in 2003, and the library was a simple component object/event based system back then. Later I got interested of the IMGUI concept and abandoned the old API to recreate it. Along the years it has always been open source – first hosted in SourceForge.net and nowadays in Google code.
Now I have finally upgraded the library version to 2.0.0 (this version is also known as Turs2). Check out the Turska home page if you want to know more.