As a developer, I liked the Cafu Engine's capability to create variety of 3D games and application very easily. The other features I liked about it are cross-platform portablity and very fast built-in network for LAN games which I have used personally in my project.

The best thing about the application is it is equipped to create various 3D apps, Simulation techniques, and software for training & architecture. The best part about Cafu engine is it is open source which we can say is free.

I like that it supports both windows and linux and hopefully be supported for mac OS in the future as well.