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This month Duncan MacGregor is going to speak to us about Truffle Ruby. As with other interpreted languages, there are a number of options for a runtime to get your Ruby code to do something. The big one is CRuby, previously known as MRI or Matz’ Ruby intepretor. There’s also JRuby, the limited set of mruby, the fun of Ruby written in Ruby from Rubinius, the once and not forgotten Ruby Enterprise Edition and Maglev Ruby. Truffle is the newest of these, with a focus on high performance. Knowing what’s available means you can choose the most appropriate interpreter for the job you’re trying to get done, and each different interpreter also helps explore new areas for the other, pushing the state of the art forward.