YARV

YARV
Developer(s)Koichi Sasada
Stable release
3.4.4  / 14 May 2025 (14 May 2025)
Repositorygithub.com/ruby/ruby
Written inC
Operating systemCross-platform
PredecessorRuby MRI
TypeRuby Virtual Machine
LicenseRuby License
Websitewww.ruby-lang.org

YARV (Yet another Ruby VM) is a bytecode interpreter that was developed for the Ruby programming language by Koichi Sasada. The goal of the project was to greatly reduce the execution time of Ruby programs.

Since YARV has become the official Ruby interpreter for Ruby 1.9, it is also named KRI (Koichi's Ruby Interpreter), in the same vein as the original Ruby MRI, named in honor of Ruby's creator Yukihiro Matsumoto.