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).



SqueakJS is described as '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' and is an website in the development category. There are five alternatives to SqueakJS, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android apps. The best SqueakJS alternative is Pharo, which is both free and Open Source. Other great sites and apps similar to SqueakJS are React Studio, Dolphin Smalltalk, Squeak and Smalltalk.
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.



Smalltalk is an object-oriented programming (OOP) language. It is objects all the way down. Smalltalk’s purity and clarity in this regard made it the archetype for nearly all other OOP languages.