Apps similar to Amber Smalltalk include JavaScript, which is free and open source. Other options are CoffeeScript, Elm, ReScript and Real-Time JavaScript Tool. In total there are five Programming Languages like Amber Smalltalk for Windows, Linux, Mac, the web and iPad.
JavaScript (sometimes shortened to JS) is a lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for Web pages, but also used in many non-browser environments.
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CoffeeScript is a little language that compiles into JavaScript. Underneath all those awkward braces and semicolons, JavaScript has always had a gorgeous object model at its heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way.
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Elm aims to make web development more pleasant. Elm is a type-safe, functional reactive language that compiles to HTML, CSS, and JavaScript.
ReScript is a robustly typed language that compiles to efficient and human-readable JavaScript. It comes with a lightning fast compiler toolchain that scales to any codebase size.
Real-Time JavaScript Tool is a portable tool that allows JavaScript codes to be executed in Real-Time!
