Granny is a powerful toolkit for building all kinds of interactive 3D applications. It features the most efficient and flexible content exporters, data manipulation, and run-time animation system you’ll find anywhere. It was built from the ground up to allow you to decide, on a case by case basis, precisely how Granny should be integrated into your code and art pipeline. It has been licensed by over 400 games since its release.
Granny is the 3D engine behind GuildWars