This has the best file archive that I have found on the internet as of yet. If you have a good file archive, send me your link.
This is another good archive. It also does not have the same files as TI-Calc either. Visit here for the files we lack.
This is a good site for TI-89 files. It also has a lot of good math programs.
This has the best hardware for the TI. It has a phonelinc, which can make the calc to calc link as long as you want, and also sells a radiolinc, making it possible for two or more calculators to communicate up to 600 feet wirelessly. And it is on a free megaband, so no license required (If you don't know what I mean, do not worry about it).
Great site for info. Responds to common questions seen in discussion groups, and contains additional useful information about things that can be done with a calculator.
an all around great site, great TI-83+ games. Includes programs and articles about programming, mostly for the z80 TI graphing calculators.
Home page of the premier shell and GUI for assembly programs on the TI-89 and TI-92+, with screen shots.
("The best site totally devoted to the TI-89" - Protoss) Includes original TI-89 BASIC programs, selective archive of the best TI-89 games and programs with reviews, links to other TI sites, and a message board.
cool site with cool cars, ads, links, and more
(made by Lowrider of C2)