Imagineer Systems Limited is a software company that specializes in the development and maintenance of several visual effects software applications. They are the "maker of the Academy Award-winning planar-tracking software Mocha." The company was founded in June 2000 by Allan Jaenicke and Philip McLauchlan. The applications produced by Imagineer have been widely adopted within the entertainment industry, and can be seen in films such as X-Men: First Class, Alice in Wonderland and Black Swan.
Definition from Wikipedia – Imagineer Systems
PS: Did a little test track with the AE version.