MayaMerge

MayaMerge lets you open any file (.mb/.ma/.fbx/.obj), pick exactly the objects you need from a handy list, and bring only those into your current scene — with no junk: only the selection's own materials, skin and animation come across.

Detach mode

Its highlight. You can pull a working sub-rig — say, a weapon with its control bones — out of a character as a standalone, still-animated prop, with animation and skin intact.

Off-screen mode

For total isolation: your scene never touches the source file at all.

Who it's for

Animators, riggers, and anyone who assembles scenes from pieces and is tired of dragging clutter out of other people's files.