The plugin that offers a professional, for a free and open-source 3D computer graphics software toolset used for creating animated films, visual effects, art, 3D printed models, interactive 3D applications and video games,   3D modeling of what?
ManuelbastioniLAB ManuelbastioniLAB is a free and open source plug-in for Blender for the parametric 3D modeling of photorealistic humanoid characters.
Cadpick Cadpick is a digital media market-place for 3D models, 2D blueprints and print-ready models used in a wide variety of industries, including but not limited to architecture, computer graphics games, manufacturing, augmented reality and much more. The Cadpick online platform allows 3D modelers, artists and design studios to upload their 3D assets for sale or share them for free.