JRuby

Implementation of the Ruby programming language atop the Java Virtual Machine, written largely in Java. JRuby has built-in support for Rails, RSpec, Rake, and RubyGems.

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First released 2001
Developed by Charles Oliver Nutter
Latest stable version 9.1.x
Open-source Yes
Used by LinkedIn, Hoppr

Interesting facts

JRuby is tightly integrated with Java, and can be called directly from Java programs.

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Development by Synergize.digital

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