Blender is the free and open-source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing, video editing, and motion tracking.
SketchUp (formerly Google Sketchup) is a 3D modeling computer program for a wide range of drawing applications such as architectural, interior design, civil and mechanical engineering, film, and video game design—and available in a freeware version, SketchUp Make, and a paid...
MakeHuman is an interactive modelling tool for creating realistic 3D human characters. These models can be exported to several computer graphics and animation platforms including Blender, Unity 3D, Unreal Engine, OpenSim and Second Life.
Wings 3D is a subdivision modeler inspired by Nendo and Mirai from Izware.
It is possible to assign materials, vertex color, UV coordinates and textures, but there will be improvements in those features before Wings goes 1.0.
There is no support in Wings for doing animations.
MODO is a fully featured 3D content creation application, famous primarily for it's modelling capabilities, MODO also offers a fast renderer, sculpting, painting, dynamics and animation tools.
LightWave 3D combines a state-of-the-art renderer with powerful, intuitive modeling, and animation tools. Tools that may cost extra in other professional 3D applications are part of the product package, including 999 free cross-platform render nodes, support for Windows and Mac...
Silo Professional is the main version of Silo, which gives users access to everything Silo has to offer. This includes Silo's core modeling toolset, as well as advanced features for UV editing, displacement painting, re-topologization, and more.
K-3D is free-as-in-freedom 3D modeling and animation software. It features a plugin-oriented procedural engine for all of its content, making K-3D a very versatile and powerful package.
According to the official website k-3d.org :The latest "source code" release is from November 2015. And the latest binary executable release is even older. According to its Sourceforge page ( https://sourceforge.net/projects/k3d/files/K-3D Win32 Binaries/ ), latest release is from june 2010.