# MRI Rubies
(ruby-)1.8.6(-p399)
(ruby-)1.8.6-head
(ruby-)1.8.7(-p302)
(ruby-)1.8.7-head
(ruby-)1.9.1-p243
(ruby-)1.9.1-p376
(ruby-)1.9.1(-p429)
(ruby-)1.9.1-head
(ruby-)1.9.2-preview1
(ruby-)1.9.2-preview3
(ruby-)1.9.2-rc1
(ruby-)1.9.2-rc2
(ruby-)1.9.2(-p0)
(ruby-)1.9.2-head
ruby-head

# JRuby
jruby-1.2.0
jruby-1.3.1
jruby-1.4.0
jruby-1.5.1
jruby(-1.5.2)
jruby-head

# Rubinius
rbx(-1.0.1)
rbx-head

# Ruby Enterprise Edition
ree-1.8.6
ree(-1.8.7)
ree-1.8.6-head
ree-1.8.7-head

# MagLev
maglev(-24067)
maglev-head

# Shyouhei head, the default mput
mput(-head)

# Mac OS X Snow Leopard Only
macruby(-nightly) # the default macruby
macruby-head      # Build from the macruby git repository

# IronRuby -- Not implemented yet.
ironruby-0.9.3
ironruby-1.0-rc2
ironruby-head