Sun Application Server 9.0 PE Open Sourced
farble1670 writes "Sun Microsystems has released their Application Server 9.0 PE platform as open source, under the code name Glassfish. Version 9.0, when complete, will be J2EE 5 compliant. Code is released under Sun's CDDL (common development and distribution license), the same license used to cover the Open Solaris, the open-source Solaris operating system. This is most likely a response to the popular open-source application server JBoss, which has cut into profits for Sun as well as other major application server vendors such as BEA and IBM."
I'll probably get flamed, and rightfully so, because I'm really uninformed on this topic, and I'm going to shoot off my mouth anyway. I'm just a dilletante. But I don't think that rails is much of a competitor.
Rails is more about rapid and agile development, and these big application servers are more about running big heavy duty enterprise apps.
I have the feeling that most apps that run in these containers are speced out pretty completely, developed in concert with layers of management, etc. And then there are all of the java APIs, that do just about everything you'd want in an enterprise app.
I sort of see rails as occupying a middle ground between PHP and a java app server. You get the structure of a java framework with the ability to know stuff out of PHP.
But there's more of a learning curve than you have with PHP, and you don't get the really robust admin tools of a good app server and the fabled java APIs.
So I think that they're really different tools for different kinds of jobs.