Open Source JavaScript Compilers
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JavaScript Compilers
View 5939 business solutionsBrowse free open source JavaScript Compilers and projects below. Use the toggles on the left to filter open source JavaScript Compilers by OS, license, language, programming language, and project status.
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Catch Bugs Before Your Customers DoMove from alert to fix before users notice. AppSignal monitors errors, performance bottlenecks, host health, and uptime—all from one dashboard. Instant notifications on deployments, anomaly triggers for memory spikes or error surges, and seamless log management. Works out of the box with Rails, Django, Express, Phoenix, Next.js, and dozens more. Starts at $23/month with no hidden fees.
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AI-generated apps that pass security reviewRetool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
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TypeScript
Application-scale JavaScript
TypeScript is an open source programming language that is a typed superset of JavaScript. It adds optional static typing to JavaScript, which can support tools for large-scale JavaScript applications for any browser, host and OS. TypeScript compiles to clean, simple JavaScript, and uses existing JavaScript code and libraries. It also offers support for the latest and evolving JavaScript features, such as async functions and decorators. -
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Svelte
Cybernetically enhanced web apps
Svelte is a new way to build web applications. It's a compiler that takes your declarative components and converts them into efficient JavaScript that surgically updates the DOM. Svelte shifts as much work as possible out of the browser and into your build step. No more manual optimizations, just faster, more efficient apps. Write breathtakingly concise components using languages you already know, HTML, CSS, and JavaScript. Oh, and your application bundles will be tiny as well. Built-in scoped styling, state management, motion primitives, form bindings and more — don't waste time trawling npm for the bare essentials. It's all here. -
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Babel
The compiler for writing next generation JavaScript
Babel is a toolchain that helps you write code in the latest version of JavaScript. It converts ECMAScript 2015+ code into a backwards compatible version of JavaScript that can be run by older JavaScript engines. With Babel you can transform syntax, polyfill features that are missing in your target environment, transform source code and more! -
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Marked
A markdown parser and compiler. Built for speed
A low-level markdown compiler for parsing markdown without caching or blocking for long periods of time. Light-weight while implementing all markdown features from the supported flavors & specifications. Available as a command-line interface (CLI) and running in client- or server-side JavaScript projects. The only completely secure system is the one that doesn't exist in the first place. Having said that, we take the security of Marked very seriously. To prevent ReDoS attacks you can run marked on a worker and terminate it when parsing takes longer than usual. Marked can be run in a worker thread on a node server, or a web worker in a browser. Only current and LTS Node.js versions are supported. End-of-life Node.js versions may become incompatible with Marked at any point in time. -
Our Free Plans just got better! | Auth0You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
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Schism
A self-hosting Scheme to WebAssembly compiler
Schism is an experimental compiler that translates Scheme programs into WebAssembly, allowing Scheme code to execute in both browser environments and server platforms like Node.js. Developed initially by Google researchers, the project was designed to explore the intersection of functional programming and WebAssembly’s low-level efficiency. Schism supports a subset of the R6RS Scheme standard and is self-hosting, meaning that the compiler itself is written in and compiled by Schism. Its architecture demonstrates advanced compiler design techniques such as staged compilation and snapshot-based bootstrapping. The project focuses on leveraging WebAssembly’s experimental capabilities, including reference types and tail calls, to test the limits of language portability and runtime performance. Though no longer actively maintained, Schism remains a valuable example of how high-level languages can be mapped to WebAssembly and offers insights into language implementation. -
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V Programming Language
Simple, fast, safe, compiled language for developing software
Simple language for building maintainable programs. You can learn the entire language by going through the documentation over a weekend, and in most cases, there's only one way to do something. This results in simple, readable, and maintainable code. Despite being simple, V gives a lot of power to the developer and can be used in pretty much every field, including systems programming, webdev, gamedev, GUI, mobile, science, embedded, tooling, etc. V avoids doing unnecessary allocations in the first place by using value types, and string buffers, promoting a simple abstraction-free code style. Most objects (~90-100%) are freed by V's auto-free engine: the compiler inserts necessary free calls automatically during compilation. A remaining small percentage of objects is freed via GC. The developer doesn't need to change anything in their code. "It just works", like in Python, Go, or Java, except there's no heavy GC tracing everything or expensive RC for each object. -
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Webpack Encore
A simple but powerful API for processing and compiling assets
Symfony ships with a pure-JavaScript library, called Webpack Encore, that makes it a joy to work with CSS and JavaScript. You can use it, use something else, or create static CSS and JS files in your public/ directory directly and include them in your templates. Webpack Encore is a simpler way to integrate Webpack into your application. It wraps Webpack, giving you a clean & powerful API for bundling JavaScript modules, pre-processing CSS & JS, and compiling and minifying assets. Encore gives you a professional asset system that's a delight to use. Encore is inspired by Webpacker and Mix, but stays in the spirit of Webpack, using its features, concepts and naming conventions for a familiar feel. It aims to solve the most common Webpack use cases. Encore is made by Symfony and works beautifully in Symfony applications. But it can easily be used in any application in any language! -
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gulp
A toolkit to automate & enhance your workflow
gulp is a streaming build system that automates slow, repetitive and time-consuming tasks in your development workflow. It is simple and easy to use with only a minimal API surface, but powerful enough to compose efficient build pipelines. gulp is flexible and composable, and is also platform-agnostic, which means you can use it with PHP, .NET, Java and many other platforms. It’s got a strong ecosystem of npm modules and over 3000 curated, community-built plugins, so you can achieve exactly what you want. -
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ncc
Compile a Node.js project into a single file
Simple CLI for compiling a Node.js module into a single file, together with all its dependencies, gcc-style. Publish minimal packages to npm. Only ship relevant app code to serverless environments Don't waste time configuring bundlers, it is generally faster bootup time and less I/O overhead. Compiled language-like experience (e.g.: go). For testing and debugging, a file can be built into a temporary directory and executed with full source maps support. Some packages may need some extra options for ncc support in order to better work with the static analysis. See package-support.md for some common packages and their usage with ncc. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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WebDGap
A PhoneGap alternative for Desktop applications.
WebDGap allows you to convert any website or HTML/CSS/JavaScript web application to a native Windows, Mac, Linux, and Chrome application. WebDGap also gives you the option to export as a Chrome popup extension, and you can export your app or website as a native PhoneGap application making your app available for mobile devices :) -
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Online-GCC is an online integrated development environment (IDE) based on PHP technology. Any software developer would be able to design embedder projects for microcontrollers with or without of greater or smaller complexity, using only a Web navigator.
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Extended HTML is an extension to HTML based on XML, PHP, SQL and JavaScript technologies. The compiler is written in PHP 5 (so it can be deployed on a web page) and allows the developper to create in one file objets used both on client and server side.
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JavaScriptFlash: Compiling JavaScript to SWF JavaScriptFlash is a web-based platform to support the JavaScript web programmers to develop Flash applications in JavaScript. It compiles the JavaScript code following certain rules into a Flash SWF file
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RockScript is the world's smallest Java-based JavaScript interpreter, runs smoothly in any J2ME phones. The binary size of core engine including native objects/methods is less than 25K (obfuscated & JAR'ed). It can be integrated into any J2ME apps.
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A C and C++ Library + a compiler to create Adobe Flash SWF movies up to version 9 (v1.8.1). Supports nearly all the tags, includes an ActionScript compiler. Detailed docs and other tools: convert fonts to Flash, decompile Flash, jpg2swf. LASTEST IS 1.8.4
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XPHP is an IDE authoring tool for Windows that allows you to design, develop, test, debug and deploy PHP applications. [This project has been discontinued since 2005]
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Acheron is a Common Lisp (CL) to JavaScript (JS) compiler. Programs are written in a subset of CL and after compilation executed in a webbrowser. Acheron has native functions that are written in JS and are the bridge between CL and JS.
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Z80 ASM editor that gives you real-time info about Mnemonics, Waitstates/Clock cycles, and Labels. Features code completion, real-time debugging and T-states profiling.
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C-Lesh and SMW Engine
C-Lesh is a game programming language for 2D games.
C-Lesh is a game programming language for 2D games - mainly arcade and platform games. When combined with the Super Mario World (SMW) engine you can create awesome 2D platform games like Super Mario World. This language evolved from a "clone" of TI-BASIC which I began developing when I was having memory (segmentation fault) bugs with C. C-Lesh lacks memory allocation and destruction. There is no need to use pointers and you can never get memory leaks or program crashes caused by memory leaks. As C-Lesh is somewhat primitive you may like it if you are into C. I'd say its a step up from C for 2D games. Everything is set - all you need is a sprite sheet and some programming knowledge. -
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Closure Compiler JS
Package for the JS version of closure-compiler for use via NPM
closure-compiler-js packages Google’s Closure Compiler so it runs under JavaScript (e.g., Node.js) instead of a JVM, making advanced JS optimization accessible in more build pipelines. You get the same aggressive whole-program optimizations—dead-code elimination, property renaming, inlining, and cross-module motion—delivered via a JS API and CLI. Because it’s the compiler you know, it also honors Closure type annotations and JSDoc, enabling type-aware rewrites that shrink bundles without breaking semantics. The distribution is geared for tool authors: plug it into bundlers, custom scripts, or CI without dragging in a Java runtime. It’s particularly handy in constrained environments (serverless, sandboxed workers) where spawning a JVM is undesirable. In short, it brings Closure’s battle-tested optimizer to the places modern JavaScript actually runs. -
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Clue is an experimental C compiler that generates code for high-level dynamic languages such as Lua, Javascript, Perl5 and Common Lisp, as well as non-dynamic languages like C and Java. It supports the complete ANSI standard, including pointer arithmetic
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Compilador C
Compilador de lenguaje de programación C online
Compilador C es una aplicación creada para el departamento ELAI de la EUITI. Su objetivo es brindar una herramienta de autoaprendizaje a los alumnos del laboratorio de informatica -
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ECCO is a web-based IDE. In other words is an online development environment with file manager, console interface for compiling and execution of code and an editor with syntax highlighting, tabs and support for many languages and accessed with a browser
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ESA Provides a wrapper around the .NET scripting engine which adds support for hosting the scripting engine in a seperate AppDomain, and includes a Design-time environment for applications.
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The Esoteric Project is a project devoted to providing interpreters and/or compilers for every Turing-complete Esoteric Programming Language.
