This document proposes a virtual tour platform that allows architects, designers, and engineers to collaboratively edit and share 3D models and environments online in real-time. It would provide clients a way to view projects through their browser or dedicated software. The platform could also enable listing real-life assets shown in virtual tours for direct online purchase. There is currently a lack of tools for online collaborative work in 3D. A virtual tour hosting service has the potential to be viewed and used by many clients easily.