GtkTiEmu
An open source TI-89, TI-92, and T-92+ emulator for Linux and Windows.
TI 85 Emulator for Unix/Linux
An open source emulator for Linux/Unix.
TI-8x Emulator
Emulates TI-82, TI-83, TI-85, TI-86 with adjustible speed, sound support, and debugger.
Tiger Homepage
A TI-92 emulator written in C for both Windows and Macintosh systems.