Transmogrifier
http://www.thesimstransmogrifier.com/
Blueprint
http://www.simstools.com/
Menu Editor
http://www.simstools.com/
Object Editor
http://www.simstools.com/
The Sims Art Studio
The Sims Home Crafter
The Sims RugOMatic
http://www.thesimstransmogrifier.com/
RoofEdit
http://www.simprograms.com/
Costume Shop
http://theblarneystone.org/
SimWallCat
http://simwardrobe.com/
NPC Replacer
http://www.simwardrobe.com/
SimEnhancer NPC Makeover Kit
http://www.simenhancer.com/