Suffix proxied web application collaboration

Abstract

In some embodiments, a collaboration feature overlays a web application by receiving a network communication that was redirected from the web application by a suffix proxy. The collaboration feature supplements or replaces activity of the web application by maintaining per-user-account activity states, deriving a shared collaboration state from the activity states, and supplying the shared collaboration state to multiple user accounts. The collaboration feature is installed without modifying the web application. The collaboration feature provides user accounts with a collaboration capability, such as shared document editing, chat rooms, shared calendars, or shared private workspaces. Some collaboration features overlay multiple web applications, even from different vendors, and some collaboration features support posting collaboratively created content to a website even when some contributors to the content are not registered users of the website. Some collaboration features impose stricter or different cybersecurity than an underlying website.