Zenitum focus on computer vision based Augmented Reality (AR) on mobile platforms. Incorporated back in 2004 in a small office, no different from a garage, Zenitum specialized on computer vision on "cheap single camera" based object tracking and recognition. Zenitum successfully delivered mobile AR tracking engines for most popular mobile platforms such as iOS4, Android, Windows Mobile and Symbian. The SDK is freely available for the most mobile app developers. Here are some demo videos on YouTube http://www.youtube.com/watch?v=YcgebgYeU5M http://www.youtube.com/watch?v=ibWnY9ZXKzk http://www.youtube.com/watch?v=7jUaxlS52tU http://www.youtube.com/watch?v=O-myIJboPn0 http://www.youtube.com/watch?v=FoK36WlHkiQ http://www.youtube.com/watch?v=OvLTOWoze0A