Best Eloquent JavaScript Alternatives & Competitors in 2025

Build and debug modern web and cloud applications, by Microsoft

Open Source

A front end web development playground.

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

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Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications

Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.

Open Source

RegExr.com is an online tool to learn, build, and test Regular Expressions.

Open Source

Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Online playground for React

Open Source

Learn JavaScript with guided tests and flashcards

"Learn Git Branching" is the most visual and interactive way to learn Git on the web; you'll be challenged with exciting levels, given step-by-step demonstrations of powerful features, and maybe even have a bit of fun along the way.

Practice and level up your development skills and prepare for technical interviews.

Open Source

Interactive coding screencasts created in an instant

Open Source

CSS-Tricks is a website about websites.

Community-based Q&A part of the Stack Exchange platform.