Assemblage vs. Cozimo vs. GoVisually

For more efficient projects, teams and meetings. Collaborate directly in your browser. Supports 20+ filetypes. Draw, annotate and edit with partners, co-workers or friends. All changes happen real-time on all screens.

Cozimo is a real time collaboration tool where you can review your design, video and pdf projects.

GoVisually gives you a beautiful interface to upload your designs and receive feedback from peers and customers. Using Govisually you will be able to graphically annotate feedback, leave and reply to comments, manage design versions, and much more.