This is a set of command-line tools for importing and exporting NWN2 models. It will convert between MDB and OBJ format, but OBJ files can be imported into most modelling programs, either directly or via plugins. These tools allow modifications and creations of static models (placeables and tiles), but can (with care) be used to tweak animated models.
A special note: Those are command-line tools. If you do not know what that means, or how to use such programs, you should probably not waste your time by downloading these utilities.
Version 1.5 update: OBJ2MDB can now convert OBJ files created in Maya. MDB2OBJ adds a command-line option to export meshes without merging identical vertices.
Version 1.6 update: Better documentation and improved error checking.
Version 1.7 update: Mesh flag support and walkmesh type documentation added.
10 - A Masterpiece, Genuinely Groundbreaking 9 - Outstanding, a Must Have 8 - Excellent, Recommended to Anyone 7 - Very Good, Deserves a Look 6 - Good, Qualified Recommendation 5 - Fair, Solid yet Unremarkable 4 - Some Merit, Requires Improvements 3 - Poor Execution, Potential Unrealized 2 - Very Little Appeal 1 - Not Recommended to Anyone