Autodesk Character Generator is described as 'Create a character online'. There are more than 10 alternatives to Autodesk Character Generator, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and Android. The best alternative is Blender, which is both free and Open Source. Other great sites and apps similar to Autodesk Character Generator are MakeHuman (Free, Open Source), Bforartists (Free, Open Source), DesignDoll (Freemium) and VRoid Studio (Free).
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.
Create a personalized sketch doll and make it pose. Design Doll allows the manipulation of sketch doll 3D models and the use of custom models and props imported from other programs or bought from its own marketplace.
pixiv has released "VRoid Studio", a character maker that allows users to create, in easy steps, 3D model characters which can be used in various VR\AR platforms as well as the production 3DCG animation and games.