http://www.gimp.org/

http://www.itc.virginia.edu/desktop/mac/osx_intro/osxintro.html

http://en.wikipedia.org/wiki/GUI

http://en.wikipedia.org/wiki/Xerox_PARC

http://en.wikipedia.org/wiki/Xerox_Alto

http://en.wikipedia.org/wiki/Smalltalk

http://en.wikipedia.org/wiki/Laptop

http://en.wikipedia.org/wiki/Tablet_PC

http://en.wikipedia.org/wiki/Alan_Kay

http://en.wikipedia.org/wiki/Apple_Macintosh

http://en.wikipedia.org/wiki/Microsoft

http://en.wikipedia.org/wiki/MIT_Media_Lab

http://en.wikipedia.org/wiki/Nicholas_Negroponte

http://en.wikipedia.org/wiki/%24100_laptop

http://en.wikipedia.org/wiki/Rugged_computer

http://en.wikipedia.org/wiki/Linux

http://en.wikipedia.org/wiki/Crank_%28mechanism%29

http://en.wikipedia.org/wiki/OpenGL

http://en.wikipedia.org/wiki/Computer_software

http://en.wikipedia.org/wiki/Operating_system

http://en.wikipedia.org/wiki/Database