Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License. It can be used to model, shade, animate, render and composite and create interactive 3d models. Both the 32-bit and 64-bit versions of Blender are included and the proper one automatically used on each machine for maximum performance. For more details see:
Portability Note: Due to a bug in Blender, temporary files created during rendering are created in C:\tmp. When run on a standard account on many computers, the files can not be created. When run on an admin account, they are created but will be cleaned up by the launcher on exit (with any pre-existing files preserved).
Legacy and 32-bit Note: The 32-bit version included in the Blender package is 2.80, the last version available for 32-bit. This version is used for Windows 7 and earlier as well as 32-bit versions of Windows 8 and 10.