Scratch (programming language)

Scratch
Logo used since 16 October 2015
Scratch 3.0 editor
ParadigmEvent-driven, block-based programming language
DeveloperScratch Foundation
First appeared
  • 11 October 2003 (2003-10-11) (prototype Scratch 0.1)
  • 15 May 2007 (2007-05-15) (Scratch 1.0)
  • 9 May 2013 (2013-05-09) (Scratch 2.0)
  • 2 January 2019 (2019-01-02) (Scratch 3.0)
Stable release
  • Scratch 3.0 (online editor) / 2 January 2019 (2019-01-02)
  • Scratch 3.29.1 (offline editor) / 27 February 2022 (2022-02-27)
Implementation languageSqueak (Scratch 1.x)
ActionScript (Scratch 2.0)
HTML5, JavaScript (Scratch 3.0)
OSMicrosoft Windows, macOS, Linux (via renderer), HTML5 (via web browser), iOS, iPadOS, and Android.
License

    GNU Affero General Public License (Scratch 3.0)

    Filename extensions.sb, .sprite (Scratch 1.x)
    .sb2, .sprite2 (Scratch 2.0)
    .sb3, .sprite3 (Scratch 3.0)
    Websitescratch.mit.edu
    Influenced by
    Logo, Smalltalk, HyperCard, StarLogo, AgentSheets, AgentCubes, Etoys, Snap!
    Influenced
    Catrobat, ScratchJr, Snap!, mBlock, Turtlestitch

    Scratch is a high-level, block-based visual programming language and website aimed primarily at children as an educational tool, with a target audience of ages 8 to 16. Users on the site can create projects on the website using a block-like interface. Scratch was conceived and designed through collaborative National Science Foundation grants awarded to Mitchel Resnick and Yasmin Kafai. Scratch is developed by the MIT Media Lab and has been translated into 70+ languages, being used in most parts of the world. Scratch is taught and used in after-school centers, schools, and colleges, as well as other public knowledge institutions. As of 15 February 2023, community statistics on the language's official website show more than 123 million projects shared by over 103 million users, and more than 95 million monthly website visits. Overall, more than 1.15 billion projects have been created in total, with the site reaching its one billionth project on April 12th, 2024.

    Scratch takes its name from a technique used by disk jockeys called "scratching", where vinyl records are clipped together and manipulated on a turntable to produce different sound effects and music. Like scratching, the website lets users mix together different media (including graphics, sound, and other programs) in creative ways by creating and "remixing" projects, like video games, animations, music, and simulations.