JBoss is described as 'is Red Hats Java EE 5-compliant (soon Java EE 6-compliant) application server. It is, as with Red Hat itself, dual-licensed either as open source (community edition) or commercially (enterprise edition)' and is an app in the Development category. There are more than 10 alternatives to JBoss for a variety of platforms, including Windows, Linux, Mac, Java and Online / Web-based. The best alternative is Apache Tomcat, which is both free and Open Source. Other great apps like JBoss are Socket.io (Free, Open Source), Jetty (Free, Open Source), Glassfish (Free, Open Source) and Oracle Weblogic Server (Free Personal).
Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies. Apache Tomcat powers numerous large-scale, mission-critical web applications across a diverse range of industries and organizations.
GlassFish v3, built by the GlassFish community, is the first compatible implementation of the Java EE 6 platform specification. Many of the Java EE 6 themes carry over to Sun GlassFish Enterprise Server v3 - flexibility, extensibility, and developer ease of use.
Simperium is a service for developers to move data everywhere it's needed, instantly and automatically. Use a Simperium library and write a few lines of code. Simperium can then move any JSON data across multiple versions of your app and your backend services.
appserver.io is a multithreaded application server for php written in php. Our technology allows real multi-threading in PHP and different useful services for developers enabling more efficiency and security. And best of all – it is completely open source!