So we read a lot on HN about how JRuby has taken off, in terms of Chris Seaton's work with Truffle, Graal, and dynamicinvoke research for Java. JRuby, with efforts by him and sepearate work by others, has shown that jokes aside, porting successful languages or language styles to Java (JRuby, Clojure, Scala, and others) has real benefits. I mean even if you hate Java/JVM stuff, you can use paradigms and tools, partially or completely, on a stack you hate. For some of us that is a godsend, and I think it shows how cool open source programming is, where people are porting whole runtimes and languages to mix-match for their pleasure.<p>Now, with that in mind, I heard a long time ago, and it might be utter BS that Jython is way behind JRuby in terms of community, and very fairly, not as performant or robust bc there are only so many eyes for shallow bugs. Is this true? I see geovizer and others are making use of it, but others using it to good effect and it is worth their while?<p>I am now studying Java academically, and played with Python for years. The idea of doing Django-REST-Framework on Jython instead of learning Rails-API for JRuby as trial by fire exercise, at least in my mind, is more appealing. So anyone know how realistic this is?