Here you can find tools and libraries that works with Mogre and you can use in your projects.
Class that embeded most thing to do with OGRE (render, OSM scen loading, movement, collision detection with Newton, reflection...
Beware : work in progress.
clOgre - .Net class to begin quickly with Mogre. Writing in VB, well commented (I think) in english and french, but still a job in progress.
OpenSteerDotNet - library to help construct steering behaviors for autonomous characters in games and animation.