Alternatives to Kotlin for all platforms with any license

  • Python icon

    Python

    Python is an interpreted, interactive, object-oriented, extensible programming language. It provides an extraordinary combination of clarity and versatility, and is free and comprehensively ported.

    Open Source Mac Windows Linux S60 BSD AROS Haiku AmigaOS OpenSolaris MorphOS

  • JavaScript icon

    JavaScript

    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. JavaScript...

    Open Source Mac Windows Linux Web / Cloud Android iPhone Chrome OS BSD iPad AROS Haiku

  • Java icon

    Java

    Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.

    Free Mac Windows Linux Web / Cloud Android Java Mobile S60 HP webOS Blackberry Android Tablet BSD Blackberry 10 PlayBook Kindle Fire

  • Ruby icon

    Ruby

    Ruby is a dynamic, reflective, general purpose object-oriented programming language that combines syntax inspired by Perl with Smalltalk-like features. Ruby originated in Japan during the mid-1990s and was initially developed and...

    Open Source Mac Windows Linux BSD Haiku

  • C# icon

    C#

    C# is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines.

    Open Source Mac Windows Linux BSD

  • Lua icon

    Lua

    Lua is a powerful, fast, lightweight, embeddable scripting language. Lua combines simple procedural syntax with powerful data description constructs based on associative arrays and extensible semantics. Lua is dynamically typed...

    Open Source Mac Windows Linux BSD Haiku AmigaOS MorphOS

  • Perl icon

    Perl

    Perl is a high-level, general-purpose, interpreted, dynamic programming language with over 22 years of development. The Perl languages borrow features from other programming languages including C, shell scripting (sh), AWK, and...

    Open Source Mac Windows Linux BSD Haiku

  • CoffeeScript icon

    CoffeeScript

    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...

    Open Source Mac Windows Linux Web / Cloud

  • Dart icon

    Dart

    Dart (originally called Dash) is a Web programming language developed by Google. It was unveiled at the GOTO conference in Aarhus, 2011 October 10-12. The goal of Dart is "ultimately to replace JavaScript as the lingua franca of...

    Open Source Mac Windows Linux Web / Cloud

  • Haskell icon

    Haskell

    Haskell is an advanced purely-functional programming language. An open-source product of more than twenty years of cutting-edge research, it allows rapid development of robust, concise, correct software. With strong support for...

    Open Source Mac Windows Linux BSD

  • Scala icon

    Scala

    Scala is a modern multi-paradigm programming language based on the Java Virtual Machine (JVM) designed to express common programming patterns in a concise, elegant, and type-safe way.

    Open Source Mac Windows Linux BSD

  • Apple Swift icon

    Apple Swift

    Swift is a programming language for iOS, OS X, watchOS and tvOS apps that builds on the best of C and Objective-C, without the constraints of C compatibility. Swift adopts safe programming patterns and adds modern features to make...

    Open Source Mac Linux

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  • Objective-C icon

    Objective-C

    The Objective-C language is a simple computer language designed to enable sophisticated object-oriented programming. Objective-C is defined as a small but powerful set of extensions to the standard ANSI C language. Its additions to C...

    Open Source Mac Windows Linux BSD

  • Groovy icon

    Groovy

    Groovy is an agile and dynamic language for the Java Virtual Machine (JVM).

    Open Source Mac Windows Linux

  • Jython icon

    Jython

    Jython, successor of JPython, is an implementation of the Python programming language written in Java.

    Open Source Mac Windows Linux Python

  • F# (programming language) icon

    F# (programming language)

    F# is a succinct, expressive and efficient functional and object-oriented language for .NET which helps you write simple code to solve complex problems.

    Open Source Mac Windows Linux BSD

  • Clojure icon

    Clojure

    Clojure is a dynamic programming language that targets the Java Virtual Machine (and the CLR ). It is designed to be a general-purpose language, combining the approachability and interactive development of a scripting language with an...

    Open Source Mac Windows Linux BSD

  • Typescript icon

    Typescript

    Now acquired by MICROSOFT. TypeScript is a language for application-scale JavaScript development. It is a typed superset of JavaScript that compiles to plain JavaScript in any browser, any host, any OS and it is Open Source.

    Open Source Mac Windows Linux Web / Cloud Self-Hosted Node.JS

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  • IronPython icon

    IronPython

    IronPython is an implementation of the Python programming language running under .NET and Silverlight. It supports an interactive console with fully dynamic compilation. It's well integrated with the rest of the .NET Framework and...

    Open Source Mac Windows Linux Python

  • LiveScript icon

    LiveScript

    LiveScript is a language which compiles down to JavaScript. It is a fork of Coco which is in turn derived from CoffeeScript. Like those two it has a relatively straightforward mapping to JavaScript. LiveScript is Coco but much more...

    Open Source Mac Windows Linux

  • jRuby icon

    jRuby

    JRuby is a 100% Java implementation of the Ruby programming language running on the Java Virtual Machine (JVM).

    Open Source Mac Windows Linux

  • Babel icon

    Babel

    Babel is a generic multi-purpose compiler for JavaScript. Using Babel you can use (and create) the next generation of JavaScript, as well as the next generation of JavaScript tooling. JavaScript as a language is constantly...

    Open Source Mac Windows Linux Web / Cloud Node.JS

  • Kaffeine JS icon

    Kaffeine JS

    Kaffeine is a set of extensions to the Javascript syntax that attempt to make it nicer to use. It compiles directly into javascript that is very similar, readable and line for line equivalent to the input (you can beautify if you...

    Open Source Mac Windows Linux

  • Solid

    Solid - A minimalist interpreted language, with a clean object model and a tiny VM.

    Open Source Mac Windows Linux

  • Wyvern

    Wyvern is a new programming language designed to help developers be highly productive when writing high-assurance applications. The first major innovation in Wyvern is type-specific languages, a feature that allows programmers to...

    Open Source Mac Windows Linux

  • Script# icon

    Script#

    Script# brings the power and productivity of C# and .NET tools to Ajax development by compiling C# source code into regular JavaScript.

    Free Mac Windows Linux

  • Lasso icon

    Lasso

    Lasso is one of the most popular programming languages on the web - though it is often overlooked given that it is commercial, not open-source. But for a small fee, a fully supported language (once part of Apple) will allow you to...

    Freemium Mac Windows Linux

  • X10 (programming language) icon

    X10 (programming language)

    The X10 programming language is organized around four basic principles of asynchrony, locality, atomicity, and order that are developed on a type-safe, class-based, object-oriented foundation. This foundation is robust enough to...

    Open Source Mac Windows Linux

  • Racket icon

    Racket

    Racket (formerly PLT Scheme) is a modern programming language in the Lisp/Scheme family, suitable for a wide range of applications. It goes beyond Lisp and Scheme with dialects that support objects, types, laziness, and more. Racket...

    Open Source Mac Windows Linux BSD

  • Bublé icon

    Bublé

    Inspired by Babel, Bublé is an ES2015 compiler that takes your ES2015 JavaScript code and turns it into code that can run in today's environments.

    Open Source Mac Windows Linux Self-Hosted Node.JS GitLab

  • Coco

    Unfancy CoffeeScript. Coco is a CoffeeScript dialect that aims to be more radical and practical.

    Open Source Mac Windows Linux

  • Elixir icon

    Elixir

    Elixir is a dynamic, functional language designed for building scalable and maintainable applications.

    Open Source Mac Windows Linux

  • Blade

    The core tools for Blade rich client development. Contribute to blade development by creating an account on GitHub.

    Open Source Windows

  • Objective-J icon

    Objective-J

    Objective-J is a programming language developed as part of the Cappuccino web development framework. Its syntax is nearly identical to the Objective-C syntax and it shares with JavaScript the same relationship that...

    Open Source Mac Windows Linux Web / Cloud

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