TI-83

Bill Paetzke's TI-83 Programs
Math, science, and financing programs for the TI-83, as well as basic and assembly tutorials.
http://paetzke.com/ti83programs/

Detached Solutions
A programming group with Flash applications for the TI-83+ with a shell, a puzzle pack, and utilities.
http://www.detachedsolutions.com/main/

Evil Eyes
Mechanics and the mathematics of programming.
http://www.geocities.com/dgazcht/dgazcht.htm

Precalculus Algebra TI-83 Tutorial
Tutorial for using the TI-83 or TI-83+ in a precalculus algebra or college algebra course.
http://www.titutorials.com/algb83/index.htm

TI-83/+ Games
Games and programs for download.
http://www.geocities.com/pilotace001/Download_main.html

Tyler's TI-83+ Page
Games and programs with descriptions and screenshots for the TI-83+.
http://www.geocities.com/tx3_tx5/home.html