White Paper Clip is a consulting and development house that specializes in web, iPhone, iPad, and Android apps.
Lyceed is an elegant suite of merged mortgage applications.
Photon allows you to combine all the photos taken by your friends at an event.
The idea behind this is that you're supposed to rotate each "block" until the equations on all four sides match up.
Here's a straightforward example for modifying a spreadsheet directly from Android, without using OAuth.
Someone recently asked me how to go about counting "shapes" in a multidimensional list, but in Haskell, specifically.