Sites like babeljs.io

ESLint project website: documentation, playground and team pages for ESLint, the pluggable open-source JavaScript linter

Rust-based open source platform of fast developer tools such as a JavaScript/TypeScript compiler, documented by its project team

The Rollup JavaScript module bundler's official website, with documentation, FAQs, an online REPL and browser build guides

A JavaScript testing framework named Jest, documented on its official site, with French and English pages and community help

A JavaScript toolkit, gulp.js, for automating build workflows with composable streaming tasks and plugins, documented through its project website

PostCSS, a JavaScript tool documentation site for transforming CSS with plugins such as Autoprefixer and its API reference

Yarn, a JavaScript package manager; its documentation and API reference for the @yarnpkg packages

Mocha, a JavaScript test framework for Node.js and browsers, with its project documentation and API reference

Parcel, a zero-configuration JavaScript build tool for the web, with release announcements and blog posts from its team

Prettier, an opinionated code formatter for JavaScript, CSS, Markdown and other languages, with editor and CI integrations

Stylelint, a linter for CSS and related stylesheet syntax, with documentation, changelog, contributing guide and vision pages

JavaScript minifier Terser: a tool and documentation site for shrinking, mangling and compressing JavaScript code

Vite, a frontend build tool and development server for modern web projects, documented by its core team

Can I use..., a reference site of browser support tables for web features such as HTML5, CSS3 and JavaScript

typescript-eslint is a documentation site for the ESLint plugin and parser that lint TypeScript code, with its rules and playground

The official website of Vue.js, the open-source JavaScript framework for building web user interfaces, with its API reference and documentation

Node.js, an open-source cross-platform JavaScript runtime for building servers, web apps, command line tools and scripts

Ramda, a documentation site for a practical JavaScript functional programming library and its function reference

Ant Design, an open-source React UI component library and design system, with its release changelog and documentation

A JavaScript UI library site for Preact, a small React-like framework, with its blog, docs and branding pages

A documentation site for Changesets, an open-source tool for managing package versioning and changelogs in monorepos and CI

A utility that automatically restarts Node.js applications when source files change, used during development

A JavaScript library documentation site for Sinon.JS, offering stubs, spies, fakes and mocks for unit tests

Vite, a frontend build tool and documentation site for modern web application development, with team and event pages

A testing framework called Vitest, powered by Vite, with documentation for writing, mocking and configuring JavaScript tests

TanStack, an open-source collection of headless web application libraries and tools, with a design system, blog and chat app

A personal blog by Mike Street, a UK lead developer and CTO, on DevOps, CI/CD, PHP, Git and web development

ubugeeei's personal site: a software engineer's blog, posts, tags and book notes on Vue.js, Rust and compilers

A CSS minifier tool, cssnano, that runs formatted stylesheets through optimisations to shrink them for production

Mongoose, an object modeling library for MongoDB in JavaScript, with documentation, changelog, news and plugin listings

A UI framework and documentation site for the Svelte web framework, which compiles components into minimal browser code

TkDodo's blog: personal blog by Dominik Dorfmeister on JavaScript, React, TypeScript, TanStack Query, API design and open source

Modern Web: guides, documentation and open-source tools for building websites on web standards, with browser-native code and minimal tooling

Mock Service Worker, an API mocking library for browser and Node.js JavaScript, with documentation and guides for intercepting network requests

Aurelia, a JavaScript web application framework created by Rob Eisenberg, with documentation, learning resources and community contributors

Documentation and project site for Passport.js, an authentication middleware library for Node.js applications

The Oxc project's website describing a collection of open-source JavaScript tools written in Rust, including a compiler, with its team and sponsorship pages

React Navigation, a documentation site for routing and navigation libraries in React Native and Web apps

Blitz.js, a fullstack toolkit and conventions framework for building Next.js applications, with documentation and showcase pages