- FTP site: ftp://ftp.whtech.com/ (ftp login is anonymous with NO PASSWORD) or just use http://ftp.whtech.com
- TI Gameshelf: http://tigameshelf.net/
- TI-99 Tech Pages: http://www.nouspikel.com/ti99/titechpages.htm
- Mainbyte photos lists and projects: http://mainbyte.com/ti99/
- Atariage TI-99/4a Forums: https://atariage.com/forums/forum/164-ti-994a-computers/
- TI-99/4a Resources: https://ti99resources.wordpress.com/
- Fred Kaal’s site: NEW ADDRESS: https://hexbus.com/ti99geek/
- 99er.net: http://99er.net/
- ninerpedia: http://www.ninerpedia.org
- 99ers hall of fame: http://ti99ers.org/hof/
- Jim Peterson Awards: http://ti99ers.org/forum/viewthread.php?thread_id=77&pid=90#post_90
- Tursi’s TI software: http://www.harmlesslion.com/cgi-bin/showprog.cgi?TI994A
- http://www.stuartconner.me.uk/ti/ti.htm#internet_web_browser
- http://www.ti99.com/
- http://www.ti99.eu/
- https://www.ti99iuc.it/web/index.php?pageid=155&pagina=database_ultimi&sezione=2
Facebook Groups:
- https://www.facebook.com/groups/ti99ers/about
- https://www.facebook.com/groups/128762460400/about
- https://www.facebook.com/groups/ti99iuc/about