"Praise the Lord (among us people known as MaxED), a new version of the famous map editor GZDoomBuilder has been released. For those of you not familiar with the fork of CodeImp's DoomBuilder 2, MaxED is already working on this for several months and even years now, constantly adding new features and bringing the editor up to par with the development builds of GZDoom.
As a mapper I can definitely say that the program is the total perfection when it comes to usability and speed as MaxED incorporates requests and changes that come directly from the modding community. For a full set of changes and new features, check the development thread and get your download. You will never map the same!