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.
Ray Dream Studio Ray Dream Studio was a low-end 3D modeling software application. Initially developed by Ray Dream, Inc. in 1989-1991 for the Macintosh, it was acquired and upgraded over the course of mergers with Fractal Design and MetaCreations. Ray Dream was less expensive than most other offerings, renowned for its ease of use, and boasted an impressive feature set including a sophisticated shader editor. Other software programs from the same developers, such as Fractal Design Painter 3D, were often introduced in basic form to the suite. A moderately limited version lacking animation capability was sold for $99 as Ray Dream Designer (later Ray Dream 3D), and quickly became a mass-market favorite.