Large and small organizations are using oracle Glassfish web application server for their java-ee base web applications hosting. It provides reliable and secure / SSL java-ee applications web-hosting. It provides e-commerce web hosting for e-commerce web application built on java-ee technologies (JSF, JSP, EJBs, JMS, JAF). It is also used for Struts and Spring based web applications webhosting.
Below are the features being supported in GlassFish Application server v4
There are two additions of GlassFish application server
1- Oracle GlassFish Application Server
It is commercial supported version of GlassFish Application from Oracle.
2- GlassFish Application Server Open Source Addition
Below is the link of Official website of Glassfish application server open source addition
For more information for learning about Glassfish application server, below is the Glassfish documents link
GlassFish application server documents
To download Glassfish open source application server, click on below link for downloading
Download GlassFish Open source Web application server
To install Oracle Glassfish application server read my blog