Compilation tools for Quake 2 and Half-Life
No mapper can live without these compilation tools. They are needed to compile maps into native format of the game.
I offer a convenient package of the tools I also used to make my map for Quake 2 so that you don't have to hunt them down all over the internet.
- HLBSP, HLCSG, HLRAD, HLVIS
If you need additional compilation tools for other games, you are likely to find them on the official page of QuArK editor.