Particulating Splines... One moment please.
Web Intents were a project aimed at allowing client to client service discovery and communication over existing supported web technologies, such as iframes and SharedWorkers. The goal was to allow developers to build applications and services that could work with each other without needing to explicitly know about each other, and to solve the problem of integrating with third-party services. However, the project was later revised and replaced by a similar project called Web Introducer.