Rosetta Code

Rosetta Code is a wiki-based programming chrestomathy website with implementations of common algorithms and solutions to various programming problems in many different programming languages.[1]

Rosetta Code
Front page of
Available inEnglish
OwnerMike Mol
LaunchedJanuary 1, 2007 (2007-01-01)
Current statusOnline
Content license
Written inPHP, MediaWiki


Rosetta Code was created in 2007 by Michael Mol. The site's content is licensed under the GNU Free Documentation License 1.2, though some components may be dual-licensed under more permissive terms.[2]

The Rosetta Code web repository illustrates how desired functionality is implemented very differently in various programming paradigms,[3][4] and how "the same" task is accomplished in different programming languages.[5]

As of 25 September 2019, Rosetta Code has:[6]

  • 971 programming tasks (or problems)
  • 225 additional draft programming tasks
  • 723 computer programming languages
  • 66,679 programming language examples/entries

Data and structure

The Rosetta Code site is organized as a browsable cross-section of tasks (specific programming problems or considerations) and computer programming languages. A task's page displays visitor-contributed solutions in various computer languages, allowing a viewer to compare each language's approach to the task's stated problem.

Task pages are included in per-language listings based on the languages of provided solutions; a task with a solution in the C programming language will appear in the listing for C. If the same task has a solution in Ruby, the task will appear in the listing for Ruby as well.


Some computer programming languages found on Rosetta Code include:[7]

A complete list of the computer programming languages that have examples (entries/solutions to the Rosetta Code tasks) is available.[8]


Some tasks found on Rosetta Code include:[9]

See also


  1. Ralf Lämmel. "Software chrestomathies". doi:10.1016/j.scico.2013.11.014. 2013.
  2. "Rosetta Code:Copyrights". Retrieved 2010-12-19.
  3. Neil Walkinshaw. Chapter One: "Reverse-Engineering Software Behavior". "Advances in Computers". 2013. p. 14.
  4. Geoff Cox. "Speaking Code: Coding as Aesthetic and Political Expression". MIT Press, 2013. p. 6.
  5. Nick Montfort "No Code: Null Programs". 2013. p. 10.
  6. "Welcome to Rosetta Code". Retrieved 2019-09-25.
  7. "Most linked-to categories". Retrieved 2018-09-25.
  9. "Pages with the most categories". Retrieved 2018-10-11.
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