Fusion 360 is one cloud solution, the other one is OnShape. OnShape is made by the folks who originally developed Solidworks. I haven't used it extensively but I've been extremely impressed by the demos -- you can work with 3d models on a cheap chromebook, you can even do CAD on a smartphone.
If your models are public the product is completely free. If anything it's an excellent resource for learning professional 3d CAD.
www.onshape.com