JRuby is undoubtedly the most mature of the alternative Ruby implementations. Supporting Ruby 1.8.7 and 1.9.1 (mostly!) and JIT compilation, JRuby is already in use in mission critical Ruby apps and runs scarily fast on the JVM. In this interview with JRuby core member, Charles Nutter, we dig deep into what makes JRuby tick.

Looking for a Ruby or Rails job? There are still some good ones out there. They're getting posted daily on jobs.rubynow.com but we've got 6 special ones of our own that have come in via the Ruby Inside jobs board. Jobs this month come from the United Kingdom and the US (Portland, Chicago, Birmingham and Santa Barbara) and are, as usual, Rails heavy.

I love checking out new Ruby libraries, and recently many new ones have passed my eyes. The most prominent releases get their own post on Ruby Inside, but often there are less significant libraries that I'd struggle to write 100 words about yet still contribute to Ruby's lifeblood. This post aims to round up a selection of my recent discoveries.

Rango is a Rack-based lightweight Web framework by Jakub Šťastný that has seemingly borrowed a little bit less from past Ruby frameworks and a bit more from Django. Based on the 1.9 version of Ruby, Rango works with

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Riot is a new Ruby test framework by Justin Knowlden that focuses on faster testing. Justin was frustrated with his slow running test suites, despite employing techniques such as using factories, mocks and avoiding database access. He realized that a slow-running suite makes one reluctant to run it or expand it - not good.