Kudos on the site! Before leaving my last job, I had to do a similar tool for outsourcing, but nothing of the level of Bullet, or to what you've achieved. Mine

Kudos on the site! Before leaving my last job, I had to do a similar tool for outsourcing, but nothing of the level of Bullet, or to what you've achieved. Mine was written in Qt5 and was desktop application, so they had to had certain machine to run it. Also exchange was done through some secure ftp. But got couple of ideas from artists, technical people too while working on it (then left the company): - Wireframe is required. This way an artist can spot T-junctions, irregularly shaped model, too much density, too less (other things I don't get, but they do) - LOD (Level of detail). This usually comes at different stages - e.g. initially your outsource would do the highest (or lowest LOD), and then progress. But you need to be able to see them. - Annotations/Comments - ways to select, leave comments feedback what you like, or what the outsourcing artist may ask. Ability to share reference images would be good too. - Different lighting models - day/night/etc. For a really awesome 3D diffing check - http://3drepo.org/ http://3drepo.org/