Official project page at http://www.makehuman.org
MakeHuman(TM) is an open source (so it's completely free), innovative and professional software for the modelling of 3-Dimensional humanoid characters. Features that make this software unique include a new, highly intuitive GUI and a high quality mesh, optimized to work in subdivision surface mode (for example, Zbrush). Using MakeHuman, a photorealistic character can be modeled in less than 2 minutes; MakeHuman is released under an Open Source Licence (GPL3.0) , and is available for Windows, Mac OS X and Linux.
The MakeHuman 0.9.1 Release Candidate was published in December 2007, prompting considerable community feedback.
Development effort is currently focused on the 1.0 Release, based on a new GUI and a 4th generation mesh. This release also incorporates considerable changes to the code base which now uses a small, efficient core application written in C, with most of the user functionality being implemented in Python. Because Python is an interpreted scripting language, this means that a wide range of scripts, plugins and utilities can be added without needing to rebuild the application.
What is Open Source?
Open source software is software where the source code--the language programmers use to make computers do their jobs--is available to everyone. Anyone can see how the code works and can change it if they want to make it work differently. The opposite of open source is closed source, where the source is not available to everyone. Open Source is better than Free software, because free software is closed source, and can be easily moved to commercial software, Open Source software will be free forever.