Ruby

Dynamic, object-oriented programming language built for developer happiness and productivity. Balances functional and imperative styles with an elegant, readable syntax. Everything is an object, from numbers to classes, and the language favors convention over complexity, making it easy to express intent without boilerplate.

Public since 1995 and designed by Yukihiro Matsumoto, Ruby has grown into a top-10 language worldwide, with much of its adoption driven by Ruby on Rails and the broader ecosystem. It stands out from Python and Perl through a pure object model, first-class blocks for closures, and mixins via modules instead of multiple inheritance. The language is fully free to use, copy, modify, and distribute under an open source license.

Key capabilities:

• Pure object-oriented design: every value is an object with methods and instance variables
• Blocks and closures attach to any method for iteration, callbacks, and DSLs
• Module mixins replace multiple inheritance with a simpler composition model
• RubyGems ecosystem with hundreds of thousands of libraries for web, testing, and DevOps
• Multiple implementations: MRI for general use, JRuby on the JVM, TruffleRuby for performance, mruby for embedding

Ruby suits web applications with Rails or Sinatra, automation scripts, DevOps tooling like Chef and Vagrant, and internal tooling. Teams choose it when they want expressive, maintainable code and strong conventions. Bundler and Rake integrate with CI/CD, and the language runs on GNU/Linux, macOS, Windows, and embedded targets.