Tweak programming environment

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Tweak is a graphical user interface (GUI) layer written by Andreas Raab for the Squeak development environment, which in turn is an integrated development environment based on the Smalltalk-80 computer programming language. Tweak is an alternative to an earlier graphic user interface layer called Morphic. Development began in 2001.[1]

Applications that use the Tweak software include Sophie (version 1), a multimedia and e-book authoring system, and a family of virtual world systems: Open Cobalt, Teleplace, OpenQwaq, 3d ICC's Immersive Terf and the Croquet Project.


An experimental version of Etoys, a programming environment for children, used Tweak instead of Morphic.[2] Etoys was a major influence on a similar Squeak-based programming environment known as Scratch.


  1. ^ "ABOUT". Tweak website (Andreas Raab). 
  2. ^ Bert Freudenberg (Jan 11, 2007). "Sophie, Tweak on the OLPC laptop". 

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