Shape Divider - Create fully responsive shape dividers for your next project
CGTrader - CGTrader is an online marketplace at which artists can sell and buy Revit and 3D models.
Now UI Kit - A beautiful Bootstrap 4 UI kit. Yours free.
3DOcean - 3D Models & Accessories From $1 for 3D Models, Textures, Materials & Shaders, 2D Concepts...
NOW UI kit by InVision - A beautiful cross-platform UI kit (PSD & Sketch)
TurboSquid - TurboSquid offers 3D models for professionals.