Bill Paetzke's TI-83 Programs
Math, science, and financing programs for the TI-83, as well as basic and assembly tutorials.
Detached Solutions
A programming group with Flash applications for the TI-83+ with a shell, a puzzle pack, and utilities.
Precalculus Algebra TI-83 Tutorial
Tutorial for using the TI-83 or TI-83+ in a precalculus algebra or college algebra course.
TI-83+ Flash Software
TI's page for new versions of the TI-83+ Operating System Software as well as Flash applications for it.
TI-83/+ Games
Games and programs for download.
Tyler's TI-83+ Page
Games and programs with descriptions and screenshots for the TI-83+.