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Ruby

Ruby is an open-source programming language created by Yukihiro Matsumoto and distributed from ruby-lang.org. It is free to use, copy, modify and distribute under the Ruby License or, alternatively, the 2-clause BSD licence.

Licensing at a Glance

  • Open source
  • Freeware

  1. Ruby is copyrighted free software by Yukihiro Matsumoto that may be redistributed or modified under either the 2-clause BSD licence or the conditions of the Ruby License.[1]

  2. Under the Ruby License, modified versions may be used only within the licensee's own corporation or organization as one of the permitted options, and parts of the software may be included into other software, including commercial software.[2]

  3. Scripts and library files used as input to, or produced as output from, Ruby do not automatically fall under its copyright and may be sold commercially.[3]

  4. Some files in the Ruby distribution are not written by the author and are not under these terms; their conditions are listed in the LEGAL file.[4]

  5. The Ruby project describes the language as completely free: free of charge and free to use, copy, modify and distribute.[5]

Products

References

  1. Ruby License (license.txt) · ruby-lang.org · retrieved 2026-09-27
  2. Ruby License (license.txt) · ruby-lang.org · retrieved 2026-09-27
  3. Ruby License (license.txt) · ruby-lang.org · retrieved 2026-09-27
  4. Ruby License (license.txt) · ruby-lang.org · retrieved 2026-09-27
  5. About Ruby | Ruby · ruby-lang.org · retrieved 2026-09-27
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