3Dmdb
CGTrader
3DOcean
3DExport
TurboSquid
Sketchucation
Free3d
SketchUp 3D Warehouse
3dxo.com
CGTips
Sketchucation
Poly Haven
Textures.com
AmbientCG
TheSketchupEssentials
Texture Haven
CGTrader - CGTrader is an online marketplace at which artists can sell and buy Revit and 3D models.
CGTips - CGTips is a 3D Architectural Visualization learning platform for Architects or interior designers to build their skills in an interactive way.
3DOcean - 3D Models & Accessories From $1 for 3D Models, Textures, Materials & Shaders, 2D Concepts...
Sketchucation - Sketchucation is a 3D SketchUp Community for students, professionals, designers, and hobbyists.
3DExport - 3DExport is a 3D model marketplace where you can buy and sell 3D models, CG textures and digital objects for 3D printing with royalty free. Professional 3D models - 3DExport.com
Poly Haven - Poly Haven (formerly known as Texture Haven) is an online website where you will find scanned textures without any cost and that are of high quality.
