CGTrader - CGTrader is an online marketplace at which artists can sell and buy Revit and 3D models.
Brushd - Build An Online Creative Portfolio Effortlessly.
3DOcean - 3D Models & Accessories From $1 for 3D Models, Textures, Materials & Shaders, 2D Concepts...
Cargo - Cargo Collective is a web publishing platform that creates and offers accessible tools online.
TurboSquid - TurboSquid offers 3D models for professionals.
Crevado - Crevado makes it super-easy to create your online & mobile portfolio website.