4
TypeScript Playground
TypeScript Playground is a free browser environment for writing, running, and sharing TypeScript and JavaScript code.
Free planWeb
6.6Free plan
Visit
5
Google Web Toolkit
Google Web Toolkit (GWT) is an open-source Java framework for building AJAX web applications.
Free planWebExtensionLinuxmacOS
6.5Free plan
Visit
6
Haxelib
Haxelib is the library manager included with Haxe distributions, connecting developers to a central repository for finding, installing, and submitting libraries.
Free planAPILinuxmacOSWindows
6.5Free plan
Visit
7
js_of_ocaml
js_of_ocaml compiles OCaml bytecode programs into JavaScript for use in browsers and Node.js.
Free planWebAPILinux
6.5Free plan
Visit
8
Kotlin/JS
Kotlin/JS is a Kotlin compiler target that translates Kotlin code, the Kotlin standard library and compatible dependencies into JavaScript.
Free planWebLinuxmacOSWindows
6.5Free plan
Visit
9
SourceMeld
SourceMeld is a self-hosted code search and migration platform exposed through an API.
Free planAPISelf-hosted
6.5Free plan
Visit
10
Babel
Babel is a free JavaScript compiler that turns modern syntax into code suited to current and older browsers or other environments.
Free planWebAPILinuxmacOS
6.4Free plan
Visit
11
ClojureScript
ClojureScript is a compiler that turns Clojure code into JavaScript for client and embedded application development wherever JavaScript runs.
Free planWebLinuxmacOSSelf-hosted
6.4Free plan
Visit
12
Opal
Opal is a Ruby-to-JavaScript source-to-source compiler that translates Ruby ahead of time into plain JavaScript, without a runtime interpreter.
Free planWebLinuxmacOSWindows
6.4Free plan
Visit
13
Scala.js
Scala.js is a Scala-to-JavaScript compiler for applications that run in browsers, Node.js, and serverless environments.
Free planWebAPILinuxmacOS
6.3Free plan
Visit
14
Skulpt
Skulpt is a free, web-based implementation of Python that runs code entirely in the browser, on the client side.
Free planWeb
6.3Free plan
Visit
15
Brython
Brython implements Python 3 for interactive web applications embedded in HTML pages.
AndroidiOSWebSelf-hosted
6.2
Visit
16
J2ObjC
J2ObjC is a free, open-source command-line tool from Google that translates Java source code into Objective-C for iOS.
Free planiOSLinuxmacOS
6.2Free plan
Visit
17
CoffeeScript
CoffeeScript is a programming language that compiles into JavaScript, producing code that runs without a CoffeeScript interpreter.
WebAPILinuxmacOS
6.1
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18
Cython
Cython is a free static compiler for Python and the extended Cython language, used to create C extensions for Python.
Free planLinuxmacOSWindows
6.0Free plan
Visit
19
Dart pub
Dart pub is the package manager for finding and managing shared libraries and tools for Dart.
LinuxmacOSWindows
6.0
Visit
20
Vala
Vala is an open-source programming language for developing native applications.
Free planLinuxmacOSWindows
6.0Free plan
Visit
21
ReScript
ReScript is a free, open-source language for Linux and the web that compiles strongly typed code into clean, efficient JavaScript.
WebLinux
5.8
Visit
22
Kalai
Kalai is an open-source source-to-source transpiler that converts Clojure code into other programming languages.
Free planSelf-hosted
5.7Free plan
Visit
23
PureScript Registry
The PureScript Registry is a free, open-source package registry for the PureScript programming language.
WebAPI
5.7
Visit
24
Sucrase
Sucrase is a free JavaScript transform tool for development builds aimed at modern runtimes.
Free planAPILinux
5.7Free plan
Visit
25
Fable
Fable is an open-source compiler that lets developers write applications in F# and generate code for multiple target languages.
Web
5.6
Visit
26
Mitosis
Mitosis is a free, open-source tool that transforms JSX components into components for multiple frameworks.
WebAPI
5.5
Visit
27
CodeTransEngine
APISelf-hosted
5.2
Visit

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