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Original author(s) Francis Cianfrocca
Initial release April 13, 2006; 10 years ago (2006-04-13)
Stable release
1.0.0 / September 8, 2012; 4 years ago (2012-09-08)
Development status Active
Written in Ruby
Operating system Microsoft Windows, OS X, Linux
Type Event-driven networking
License GPL or Ruby License
Website rubyeventmachine.com

EventMachine is a software system designed for writing highly scalable applications for Ruby. It provides event-driven I/O using the reactor pattern. EventMachine is the most popular library for concurrent computing in the Ruby programming language.[1]

Example uses[edit]

EventMachine has been used to build a number of different libraries and frameworks in which concurrency is a performance concern. Some examples include:[2]

  • critical networked applications
  • web servers and proxies
  • email and IM production systems
  • authentication/authorization processors

Web application frameworks based on EventMachine[edit]


  1. ^ "The Ruby Toolbox - Concurrent Processing". Retrieved September 27, 2012. 
  2. ^ "EventMachine README". Retrieved September 27, 2012. 

External links[edit]