At the moment there are entity sets for:

Editor     |  File name  |  Created by
---------------------------------------
Qoole 	   | mappack.ent | Me (beelzabub@gamedesign.com)
WorldCraft | quake2.fdg	 | Alex S (Alex911@linkport.com)
QE4*	   | mappack.c   | SlowHandd (goforth@cyber-dyne.com)

If you make an entity set for any other editor, please send it me so I can add it to the list.

 	-Beelzabub

* - This entity set works for any editor that is based on ID's QE4 editor (I think thats what its called) or any editor that supports reading in entity files from a source file (QER, BSP are ones I can think of off the top of my head) 