Squeak is described as 'Modern, open source, full-featured implementation of the powerful Smalltalk programming language and environment' and is a programming language in the development category. There are nine alternatives to Squeak for a variety of platforms, including Mac, Windows, Linux, Web-based and BSD apps. The best Squeak alternative is F# (programming language), which is both free and Open Source. Other great apps like Squeak are Pharo, React Studio, Dolphin Smalltalk and Cuis.
Functional-first language for .NET with static typing, succinct and expressive code, advanced pattern matching, object-oriented features, interop with .NET languages, async programming, type providers, cross-platform support, tooling, and immutable data.
Pharo is a pure object-oriented programming language and a powerful environment, focused on simplicity and immediate feedback (think IDE and OS rolled into one).
React Studio lets you create components either visually or in code, then use them interchangeably in your designs.
Dolphin is a complete development IDE for Smalltalk targeted specifically at Microsoft Windows. It is capable of creating standalone GUI and console executables that will run on any version of Windows from XP up to the current Windows 10.
SqueakJS executes Squeak in a web page without a plugin. It is a fully capable virtual machine implemented in pure JavaScript running unmodified Squeak images. Squeak is a modern implementation of Smalltalk, the original dynamic object-oriented programming environment.
Q# (pronounced as Q sharp) is a domain-specific programming language used for expressing quantum algorithms. It was initially released to the public by Microsoft as part of the Quantum Development Kit.
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F# is a functional language, Squeak with its focus on Smalltalk is strongly object-oriented.