Free or Lite versions of AAC apps

Augmentative Communication Incorporated - has resources to keep people up to date on the latest AAC developments.

This is a good place to buy mostly low tech AAC supports.

http://www.givinggreetings.com/daliai.html

This site is all about AAC apps.  http://www.appsforaac.net/
This is ASHA's website about the use of apps in educational settings.

If I didn't put up this one already, in general its pretty good

the last AAC link I put up is from this website

http://www.mnsu.edu/comdis/kuster2/sptherapy.html#augmented

another site.  haven't checked it out yet but seems promising

Educational Modules of how to support AAC users.