ABCYa! Animate http://www.abcya.com/animate.htm
Audacity http://audacity.sourceforge.net/
Autodesk 123D Apps (123D Catch) http://www.123dapp.com
Blender http://www.blender.org/
Do Now http://blogs.kqed.org/education/category/do-now/
Gifmaker http://gifmaker.me
Google Picasa http://picasa.google.com/
Google Sketch Up http://www.sketchup.com/
Lego Digital Designer http://ldd.lego.com/en-us/
Mozilla PopcornMaker https://popcorn.webmaker.org/
Tinkercad https://tinkercad.com/
ArtsEd4All 