Editing Yukihiro Matsumoto (section)

==Work==
He works for the Japanese open source company Netlab.jp. Matsumoto is known as one of the open-source evangelists in Japan. He has released several open source products, including cmail, the [[Emacs]]-based mail user agent, written entirely in [[Emacs Lisp]]. Ruby is his first piece of software that became known outside Japan.<ref>{{cite web|url= http://www.oreilly.com/pub/au/714|title=Yukihiro Matsumoto|date=1 February 2013|work= O’Reilly}}</ref>

===Ruby===
Matsumoto released the first version of the [[Ruby (programming language)|Ruby programming language]] on 21 December 1995.<ref>[http://eigenclass.org/hiki/ruby+0.95 More archeolinguistics: unearthing proto-Ruby] {{webarchive |url=https://web.archive.org/web/20151106023204/http://eigenclass.org/hiki/ruby+0.95 |date=6 November 2015 }}</ref><ref>{{cite web|url=http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/382|title=<nowiki>[ruby-talk:00382] Re: history of ruby</nowiki> |work=nagaokaut.ac.jp}}</ref> He still leads the development of the language's reference implementation, [[Ruby MRI|MRI]] (Matz's Ruby Interpreter).

===mruby===
In April 2012, Matsumoto open sourced his work on a new implementation of Ruby called [[mruby]].<ref>{{cite web|url=https://github.com/mruby/mruby|title=mruby: Lightweight Ruby|date=2 November 2017|via=GitHub}}</ref><ref>{{cite web|url=http://matt.aimonetti.net/posts/2012/04/20/mruby-and-mobiruby/|title=mruby and MobiRuby – Matt Aimonetti|author=Matt Aimonetti|work=aimonetti.net|date=20 April 2012 }}</ref> It is a minimal implementation based on his virtual machine, ritevm, and is designed to allow software developers to embed Ruby in other programs while keeping [[memory footprint]] small and performance optimized.

===streem===
In December 2014, Matsumoto open sourced his work on a new [[scripting language]] called ''streem'', a [[Concurrency (computer science)|concurrent]] language based on a programming model similar to [[Shell (computing)|shell]], with influences from Ruby, [[Erlang (programming language)|Erlang]], and other [[functional programming]] languages.<ref>{{cite web|url=https://github.com/matz/streem|title=matz/streem|work=GitHub}}</ref>

===Treasure Data===
Matsumoto has been listed as an investor for [[Treasure Data]]; many of the company's programs such as [[Fluentd]] use Ruby as their primary language.<ref>{{cite web|url=http://www.treasuredata.com/company|title=Company – Treasure Data|archive-url=https://web.archive.org/web/20150503031037/http://www.treasuredata.com/company|archive-date=2015-05-03|access-date=2022-01-01}}</ref>