NxOgre Tools
Flour - A multi-purpose command line tool for artists to convert Ogre Meshes into PhysX Mesh (*.nxs) files and to convert RAW images into NxOgre (*.xhf) HeightFields.

Official Wiki and Website - Forum - Ogre Portal for NxOgre
Betajaen's Guide to creating a Bloody mess
Code snippetsbloody mess
General - Particles - Mesh Cooking - Cloths
Spacegaier's Tutorialsbloody mess
Setting up BloodyMess - First steps - Visual Debugger - Volumes & Triggers - Kinematics - Raycasting - Resources and Meshes