From: Charles Oliver Nutter <charles.nutter@...>
Date: 2008-04-02T20:04:20+09:00
Subject: Re: Sun's Overview of Ruby and JRuby

thufir wrote:
> It's all good because Ruby, and, hopefully, someday, Java, will be 
> GPL'ed.  IronRuby is a tad different because the Microsoft VM is closed.  
> The Java VM is closed (I think) but Java is, or will be, open :)

Sun's Java VM has been GPL for over a year. I believe the only pieces 
remaining non-GPL are bits of code Sun did not have the rights to 
open-source, and there's work being done right now to replace them.

http://www.sun.com/software/opensource/java/faq.jsp

The OpenJDK project is here, and you can download and build it yourself:

http://openjdk.java.net/

Microsoft's CLR, on the other hand, is entirely closed source. Mono is 
an open-source port, but it always lags pretty far behind in 
compatibility and performance.

- Charlie