Are you an existing Ruby user looking for alternative deployment scenarios ? Are you an existing GlassFish user interested in knowing you can Ruby-enable your installation ? This session provides all the details. It starts with a brief introduction to JRuby and details on how the GlassFish project provides a robust development and deployment platform for Rails applications - without pain. The JRuby introduction shows multiples samples of how the JRuby interpreter can invoke a simple Java platform library to a Java EE application.<br><br> As a basis for further discussion, this presentation explains the process for JRuby-on-Rails applications on GlassFish v2 and v3. It discussed the various development options provided by GlassFish v3, demonstrates how popular Ruby applications such as Mephisto can be easily deployed on GlassFish without any modification, and shows how v3 Gem can be used as an effective alternative to WEBrick and Mongrel. <br><br> The session also demonstrates how a JRuby-on-Rails application can be easily created by use of the NetBeans IDE and deployed directly on GlassFish. It shows how GlassFish project users can install the JRuby Update Center module that enables them to create a shared WAR file. <br><br>