CaDD Electronics Home Page
   Authors of PC99, a TI-99/4A emulator for the PC. Description as well as program, manulal and command module order information,
   http://pw2.netcom.com/~mjmw/index.html

MacV9T9
   A TI99 Emulator for the Macintosh, by Raphaël Nabet.
   http://pytheas.club.fr/english/TI99.html

PC99 Menu
   Shareware front end for PC99. Allows you to easily change modules and disks.
   http://www.btinternet.com/~shawweb/stephen/TI.htm

TI-99/SIM
   An open source emulator for Linux/Unix and Windows.
   http://www.mrousseau.org/programs/ti99sim/

The Tutti Emulator
   TUTor Tiny Implementation - an emulator of Tomy Tutor for Commodore 64 and disk drive.
   http://www.floodgap.com/retrobits/tomy/emu.html