Several platforms exist to share 3D models online. Below are some options that offer free accounts and accept OBJ and STL file formats.
When sharing your models, consider using a Creative Commons License if you would like to define or limit the way others can use your model.
You can interact with your 3D model in virtual reality using the HTC Vive available in Atkins Library's Visualization Lab by uploading your model to Tilt Brush. Find out how to import an object from Poly into the VR headset.