MakeHuman is described as 'Interactive open source tool for creating fully customizable 3D human characters, supporting real-time editing, advanced posing, and export to major animation platforms' and is a very popular 3D Modeler in the photos & graphics category. There are more than 25 alternatives to MakeHuman for a variety of platforms, including Windows, Mac, Linux, Web-based and Android apps. The best MakeHuman alternative is Blender, which is both free and Open Source. Other great apps like MakeHuman are SketchUp, Bforartists, DAZ 3D and VRoid Studio.
Hero Forge is a character creator which allows you to design high-resolution characters in 3D, right in your browser. It offers a genre-spanning library of thousands of parts, sliders, customization options, and color design tools, with fresh content added every week.
OpenFX is an open-source, free modeling and animation studio, distributed under the GNU General Public License.
Poseit is a mobile app that allow you to pose a wooden mannequin to facilitate and help you drawing or preview the human figure.
ZModeler (or Zanoza Modeler) is a 3D modeling application. It is aimed at modelers who model for computer games such as 18 Wheels of Steel, Grand Theft Auto, Need for Speed, Midtown Madness or similar video games.
Cheetah3D is a computer graphics program for 3D modelling, animation and rendering. It is written in Cocoa for MacOS. The program is aimed at beginning and amateur 3D artists.
LipService is a powerful multi-resolution subdivision surface sculpting, rigging and animation system built into a Maya plugin.
Bring Your 3D Models to Life. Mesh2Motion is a FREE & open-source web application to animate your 3D models. Supports humanoid, four-legged, and bird creatures.
XYZmaker is a 3D modeling software designed for beginners in 3D printing; it provides a model library and several tools to generate different shapes and objects easily.
AC3D is one of the longest established 3D design software programs available today. In development from 1994 and commercially available since 1996, AC3D has grown to become a highly regarded and popular program.
3DTin is a browser based 3D modelling tool.
It gives you a simple user interface to create 3D models, and runs in any HTML5 browser (Firefox, Google Chrome, Safar, IE9), no matter which operating system you use. It is absolutely FREE to use and requires no experience in 3D desig.
DX Studio combines the latest in real time 3D graphics technology from industry and gaming with rapid application development tools in a powerful 3d engine.
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If you're looking for realism then Hero Forge definitely isn't what you're looking for, but if the art style doesn't super matter to you, or if you're even explicitly looking for something stylized (but not anime), then Hero Forge is a pretty solid option. Even when keeping the visual style in mind though I will admit Hero Forge is a bit less powerful than MakeHuman, however.