From: "Jörg W Mittag" <Joerg.Mittag@...>
Date: 2007-04-15T05:05:08+09:00
Subject: Re: How does Ruby VM works?

Phillip Gawlowski wrote:
> Emilio Tagua wrote:
>> I want to read about RVM, how does ruby handle threads, the interface
>> with the OS,  and some other stuff, any low level book/paper
>> recommended?
> There are Ruby VMs in development, IIRC, but I don't know the names off 
> the top of my head.

Production-ready and in active development:

Matz' Ruby Interpreter (MRI) / CRuby: <http://Ruby-Lang.Org/>
JRuby: <http://JRuby.Org/>
Ruby.NET: <http://WWW.PLAS.FIT.QUT.Edu.Au/rubynet/>

In active development, but not necessarily production-ready:

Yet Another Ruby VM (YARV): <http://WWW.AtDot.Net/yarv/>
XRuby: <http://XRuby.Com/default.aspx>
Cardinal: <http://Cardinal2.RubyForge.Org/>
Rubinius: <http://Rubini.us/>

Status unknown:

IronRuby: <http://WWW.WilcoB.Com/Wilco/IronRuby.aspx>
Smalltalk.rb: <http://Groups.Google.De/group/smalltalk-ruby>
MetaRuby: <http://ZenSpider.Com/Languages/Ruby/MetaRuby.html>,
<http://RubyForge.Org/projects/metaruby/>

Apparently dead:

Alumina	<http://RubyForge.Org/projects/alumina/>
Carbone	<http://WWW.NonGNU.Org/carbone/>
IoRuby / YARI: <http://Google.Com/search?q=IoRuby>
RubyVM	<https://SourceForge.Net/projects/rubyvm>
RubySharp	<http://WWW.XHovemont.Be/archive/2005/11/07/1064.aspx>
Rubydium	<http://Web.Mac.Com/lypanov/iWeb/Web/Rubydium.html>,
<http://RubyForge.Org/projects/rubydium/>
.NETRuby	
<http://WWW.GeoCities.Co.Jp/SiliconValley-PaloAlto/9251/ruby/nrb.html>

Vaporware:

Rite: <http://RubyGarden.Org/ruby?Rite>

Did I forget one?

jwm