Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Gift Hero - The best wish list ever
FreeCAD - An open-source parametric 3D modeler
Wantt - Create & share wish lists for free
Sculptris - Sculptris: Enter a world of digital art without barriers.
WishTender - The safest and most flexible universal wishlist for content creators.