Squeak is an open-source Smalltalk programming system with fast execution environments for all major platforms. It features the Morphic framework, which promotes low effort graphical, interactive application development and maintenance. Many projects have been successfully created with Squeak. They cover a wide range of domains such as education, multimedia, gaming, research, and commerce.
The Squeak Development Process supports the improvement of Squeak—the core of the system and its supporting libraries—by its community. The process builds on few basic ideas: the use of Monticello as the primary source code management system, free access for the developers to the main repositories, and an incremental update process for both developers and users. (Read More)
If you identify an issue in Squeak, please file a bug report here. Squeak core developers regularly check the bug repository and will try to address all problem as quickly as possible. If you have troubles posting there, you can always post the issue on our development list.
Using the Git Browser, you can commit and browse your code and changes in Git and work on projects hosted on platforms like GitHub. With Monticello you can read and write FileTree and Tonel formatted repositories in any file-based version control system.
Andrew Black, Stéphane Ducasse, Oscar Nierstrasz, Damien Pollet, Damien Cassou, and Marcus Denker. Square Bracket Associates, 2007.
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The current Squeak release comes in various bundles including the “all-in-one” package, which works on Windows, macOS, and Linux (x86/ARM). Download, unzip, and double-click the appropriate file: *.bat for Windows, *.app for macOS, and *.sh for Linux.
Linux (ARMv6, image only)
Current Trunk Image
You can always take a look at the progress in the latest alpha version. Feel free to participate with commits to the inbox. Alpha versions are not expected to be stable. Make sure to also get the latest VM.
Everything is an object. Objects collaborate by exchanging messages to achieve the desired application behavior. The Smalltalk programming language has a concise syntax and simple execution semantics. The Smalltalk system is implemented in itself: Compiler, debugger, programming tools, and so on are all Smalltalk code the user can read and modify. Novice programmers can get started easily and experts can engineer elegant solutions at large.
Morphic UI Framework
All graphical objects are tangible and interactively changeable. This promotes short feedback loops and low-effort application development. Morphic thus leverages the live programming experience of traditional Smalltalk environments from a mainly text-focused domain to a graphical one.
The dynamic Squeak environment provides a variety of tools for browsing, writing, executing, and versioning Smalltalk code. Multiple debugging sessions can be served concurrently. Thanks to Morphic, tool customization can be achieved with reasonable effort.
There are several fast Squeak VMs that also support other languages of the Smalltalk family. Meta-tracing, just-in-time compilation, stack-to-register mapping, and aggressive in-line message caching yield efficiency in executing Smalltalk byte code.
Scratch lets you build programs like you build Lego(tm) - stacking blocks together. It helps you learn to think in a creative fashion, understand logic, and build fun projects. Scratch is pre-installed in the current Raspbian image for the Raspberry Pi.