There was a some interest in something like that (&quot;text&#x2F;ruby&quot; support via an applet + JRuby) a while back:<p><a href="http:&#x2F;&#x2F;almaer.com&#x2F;blog&#x2F;running-ruby-in-the-browser-via-script-typetextruby" rel="nofollow">http:&#x2F;&#x2F;almaer.com&#x2F;blog&#x2F;running-ruby-in-the-browser-via-scrip...</a><p>I remember hearing about it initially, but it doesn&#x27;t appear to have gotten much traction.