System Requirements: If you can run Riven, you can run this.
QuArK v4.07
QuArK stands for the "Quake Army Knife," and it's as versatile as the name implies! You can use this handy utility to edit Quake I and Quake II maps, as well as browse the textures and models and such. This is a great utility that wraps a ton of features into one handy package.