Looka - Make a logo you’ll love with Looka Logo Maker.
Sculptris - Sculptris: Enter a world of digital art without barriers.
Logo Dust - Free logo designs for your projects, added every week
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Canva Logo Maker - Create your own custom logos without having to hire a designer with Canva's impressively easy to use logo maker. Completely free, completely online.
ShapeShop - ShapeShop is an advanced and professional 3D design and modeling application that comes with an easy-to-use and user-friendly interface.