Clean Models: EE can be used to primarily decompile models which are compiled MDL files. The tool also has a useful resize option. Finally there is also a set of fixes it can potentially do to "Clean" models, although be warned; these can break things!
It is necessary to automatically decompile things in Blender.
Download Clean Models: EE here: https://neverwintervault.org/project/nwnee/other/tool/clean-modelsee
The source code is also available for the CLI and QT based GUI.
For basic tutorials on the main two uses see:
The other uses, well, it mainly is GUI driven. There is a command line (CLI) part but it runs prolog and is not fun to interact with apparently.
The cleaning aspects of the tool should be used with caution and always keep a backup of your models before using. While some of the fixes the tool does may be useful (culling faces, or other optimisations) other things it does are wrong (using "bitmap black" instead of "bitmap null" for instance) or just break the model (by changing things a bit too much or forgetting NWN:EE exists and not affecting all the bits of the model it should).
It outputs ASCII MDL, so would generally still need compiling in game to be finalised/ready for users.