Free Smalltalk Compilers and Interpreters

Compilers for the Smalltalk Programming Language

Free Smalltalk Compilers and Interpreters

Smalltalk is an object-oriented, reflective programming language that features dynamic types. It was originally named Smalltalk-80 by its creators, Adele Goldberg, Dan Ingalls and Alan Kay, but has since been standardized as ANSI Smalltalk in 1998. This page lists free compilers and interpreters for the language.

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Free Smalltalk Compilers and Interpreters

SqueakJS New

SqueakJS is a Squeak/Smalltalk implementation written in JavaScript. Its virtual machine allows you to execute unmodified Squeak images on a web page without needing a plugin. It also has a visual debugger and an optional just-in-time (JIT) compiler. It works in all modern browsers and is open source software, released under the MIT licence.


Squeak is an open source Smalltalk implementation that runs on Windows, Mac OS X and Linux. It generates code for a virtual machine, the SqueakVM, which is included. It was originally developed by Apple.

GNU Smalltalk

GNU Smalltalk is an implementation of the Smalltalk programming language. It runs on most POSIX compatible operating systems, including Linux. Like all things GNU, it is open source.

#Smalltalk (Sharp Smalltalk)

#Smalltalk, or Sharp Smalltalk, is (as you have guessed from its name) a Smalltalk compiler for the .NET framework. It allows you to use classes from the .NET framework in your Smalltalk program. Its class library is "mostly compatible with the ANSI Smalltalk standard" (to quote from the site).

Dolphin Smalltalk 2.1

This is a free version of the Dolphin Smalltalk 2.1 development system. This is a Windows program (created in the late 1990s so I'm sure if it even works on modern Windows versions).

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