If you're looking for a free alternative, there are several open-source 3D animation software options available, such as Blender, OpenToonz, and Pencil2D.
Because Autodesk has transitioned to a subscription-based model, standalone perpetual licenses for 2014 are no longer actively sold or supported. However, creators looking for accessible animation tools have several legitimate pathways: motionbuilder 2014 64 bit torrent download link