3d printing

http://www.shapeways.com/

online calculus integration wolfram mathematica

http://integrals.wolfram.com/

identify language of text

http://langid.net/

free audio books

http://www.gutenberg.org/browse/categories/1

online encyclopedias

http://www.encyclopedia.com/

convert any image to ASCII art

converts images to ASCII characters
http://www.typorganism.com/asciiomatic/

sprint "plug into now" widget

http://now.sprint.com/widget/
like a dashboard on the world