PlinkArt
Plinkart is a mobile phone application designed to identify works of art, created by Mark Cummins and James Philbin. Cummins and Philbin were one of three winners of the Education/Reference category of the Google ADC2 (Android Developer Challenge 2) where the pair won $100,000. PlinkArt was acquired by Google in April 2010. References

Android (operating system) software
Art history
Google acquisitions