Mobialia loves open source, this is the main reason because we are focused on the Android platform. We published some of our projects as open source:
Carballo Chess Engine
Is our chess engine used on the mobialia Chess application:
Mobialia Trivial Spain
Our game of questions and answers, source available at Google Code:
Mobialia Wikiplaces
This application shows on a map or on a list places from Wikipedia near your location.
Social Media Demo
This application shows some social media integration demos.
And we also participated on other open source projects:
LottoScan
A Spanish National Lottery checker using the barcode reader developed on an Android CodeSprint: