ripl, a highly extendable ruby shell, can now be translated to your
language with the ripl-i18n plugin. Currently there is support for
spanish, german, portuguese and chinese. More translations welcome :).
ripl also supports asynchronous shells. See an EventMachine example at
http://github.com/cldwalker/ripl-em . ripl works on most major rubies
(1.8.x, 1.9.x, rubinius and jruby), has a growing plugin ecosystem of
23+ plugins and is fully documented and tested. For more see