Note: it won't work until the branches used by Unvanquished are merged.
pack QuakePack GPL zip1 http://ingar.satgnu.net/files/gtkradiant/gamepacks/Quake1Pack.zip
pack TremulousPack proprietary zip1 http://ingar.satgnu.net/files/gtkradiant/gamepacks/TremulousPack.zip
pack UFOAIPack proprietary svn svn://svn.icculus.org/gtkradiant-gamepacks/UFOAIPack/branches/1.5/
+pack UnvanquishedPack GPL svn https://github.com/Unvanquished/mapeditor-support/trunk/netradiant/gamepack
#pack WarsowPack GPL svn https://svn.bountysource.com/wswpack/trunk/netradiant/games/WarsowPack/
#pack WarsowPack GPL zip1 http://ingar.satgnu.net/files/gtkradiant/gamepacks/WarsowPack.zip
pack WarsowPack GPL git https://github.com/Warsow/NetRadiantPack.git