Best Free and Open Source JavaScript Runtime Environments

The JavaScript runtime environment provides your scripts with utility libraries which can be used during execution. It’s your script that references these libraries. The engine itself doesn’t depend on them.

Unlike C and other compiled languages, JavaScript runs in a container. A program reads the JavaScript code and executes it. This program needs to parse the code and convert it into runnable commands. It must also provide objects to JavaScript so that it can interact with other things. The first part is known as the engine, the second is the runtime.

The runtime environment takes on different forms depending on the context. For example, the runtime environment in a web browser is different from that of Node.js. In a web browser, the runtime is comprised of the JavaScript engine, web APIs, the callback queue, and the event loop.

Here are the best free JavaScript runtimes. Here’s our verdict. We feature only free and open source software here.

Best Free and Open Source Java Runtime Environments

Let’s explore the 2 runtimes. For each program we have compiled its own portal page, a full description with an in-depth analysis of its features, together with links to relevant resources.

JavaScript Runtime Environments
Node.jsHugely popular cross-platform JavaScript run-time environment
DenoSimple, modern and secure runtime for JavaScript and TypeScript that uses V8

Read our complete collection of recommended free and open source software. The collection covers all categories of software.

The software collection forms part of our series of informative articles for Linux enthusiasts. There's tons of in-depth reviews, open source alternatives to proprietary software from large corporations like Google, Microsoft, Apple, Adobe, Corel, and Autodesk. There are also fun things to try, hardware, free programming books and tutorials, and much more.
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