Doom Runner is yet another launcher of common Doom source ports (like GZDoom, Zandronum, PrBoom, ...) with graphical user interface. It is written in C++ and Qt, and it is designed around the idea of presets for various multi-file modifications (Brutal Doom with mutators, Project Brutality with UDV, Complex Doom Clusterfuck, ...) to allow one-click switching between them and minimize any repetitive work.