GlassFish is an open source, production-ready, Java EE-compatible application server.
GlassFish is a Java EE open source application server.
This tag is for questions specific to GlassFish version 3 (GlassFish version 3.1.1 was released in August 2011).
The Java EE 6 platform used by GlassFish v3 introduced the lightweight Web Profile for Web-centric applications, and included the then latest versions of technologies such as JAX-RS 1.1, JavaServer Faces(JSF) 2.0, Enterprise JavaBeans (EJB) 3.1, Java Persistence (JPA) 2.0, Context and Dependency Injection (CDI) 1.0 and more.
See here for version 3 (and other legacy version) downloads.
For more modern versions of GlassFish, visit the Eclipse GlassFish home page.
For general questions about GlassFish use the glassfish tag.