The definitive Quake engine map editor 
GtkRadiant is now at version 1.6.3, with the notable addition of support for 
Quake Live, as mentioned by 
TTimo:
The main item for this release is the addition of 
QuakeLive support. This includes support for the encrypted paks, and png textures support (including on models). bspc.exe (for bot navigation files), and a version of q3map2 with QuakeLive support is provided as well.
The 
Urban Terror support has been improved as well. The default compiler for UrT is now the modified compiler that was release by FrozenSand, with the lighting model that UrT level designers are accustomed to.
Go 
get it!
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