Nifty is one of the internet's oldest and best respected archives of sex stories. Their collection of transexual stories is quite good.
StorySite is better known as Crystal's Story Site, and offers one of the largest collections of transexual and transgender sex stories. The community created by Crystal is truly special, and much more intimate than most sex story sites on this list.
TG-Fiction.com is a fantastic collection of transexual sex stories that has just about everything you could be looking for.
A limited number of stories (only 3 pages worth, but being written by one person, that's a lot)
Fictionmania was originally setup with the dream of creating a site of 10,000 trransexual sex stories. The site is now up to over 31,000 stories.
If you're looking for transexual and ladyboy sex stories, look no further than TransLadyboy.com.
ClubSissy.com is a sex story directory for transgender folks that almost rivals this one here. If it had more information, it would maybe even be better.
SapphirePlace.com is a transexual sex story site that has been around seemingly forever. Because of that, the archive is quite impressive, and full of great smut
TGStories.com is one of the only premium Transgender sex story sites that we've come across, and the content they're offering their members is well worth the price of admission to join the club.
LVTGW is a beautiful site dedicated to both arousing and educating the public about transexual and transgender lifestyles. The sex stories on here are truly top notch.