Atmosphere: Realtime client-server framework for the JVM, supporting WebSockets and cross-browser fallback support

Atmosphere logo

https://github.com/Atmosphere/atmosphere

Deployable on most Java based application servers such as Tomcat, JBoss Jetty, Resin, GlassFish, Undertow, WebSphere, WebLogic, Netty, Play! Framework and Vert.x.

Atmosphere architecture diagram