Free 3d Model Editor. Freecad is one of the most feature rich cad design software platforms. 7 of the best free stl file editors freecad.

It supports the entirety of the 3d pipeline modeling rigging animation simulation rendering compositing and motion tracking video editing and 2d animation pipeline. Vectary was built by 3d designers for 3d designers. Tinkercad is a free easy to use app for 3d design electronics and coding.
3d slash is a free browser based 3d modeling software that is designed around a building block workflow similar to the popular game minecraft.
Figuro is a free online 3d modeling tool for 3d artists game developers designers and more. Online 3d editing tool. It supports the entirety of the 3d pipeline modeling rigging animation simulation rendering compositing and motion tracking video editing and 2d animation pipeline. Freecad is one of the most feature rich cad design software platforms.