Seventh Sanctum: Contains many generators for names of many things. Dragons, fictional species, anime, what-ifs, etc... Not all of them will be guaranteed to be usable however.
Pathguy's D&D 3.5e Char Generator: Useful online character generator (I.E. used in browser) that generates a char sheet (equipment costs and such have to be manually put in) for preepic games (Epic characters are for some reason are not working and will stall you). It takes a long time to load (although there is a lighter version available) and does not include some sources. ("Fiendish" Codexes which includes BoVD and Tome of Magic )
Pathguy's D&D 4.0e Char Generator: Same as above generator except it is dedicated to 4e instead. Not having used it I'm not sure about 4.0e "epic". There is no lighter version however. WARNING: VERY LONG WEB PAGE!
Pathguy's other generators: He has many other character generators for other systems/settings. Some may or may not be working as intended. Many of them tend to be D&D 3.5e.
Redblade: Contains D&D 3.5e and earlier editions character generators and other related generators. There seems to be very little update to them however, as the latest one was August 28, 2009.
Heroforge: Contains extensive character generators for both D&D 3.5e and 4.0e. Needs Excel (or something that can view excel files) to work.
PCGen: Open source character generator that is mainly used wit the d20 system. It only works with OGL however.
That's as much generators I can bother to look around for now. Are there any other generators that I am missing?