Sites like react-spring.dev

React Hook Form is a documentation site for a performant React form library, covering its API, TypeScript types and FAQs

Poimandres, an open-source developer collective's site on React and three.js 3D graphics, with articles and projects by Christian Ortiz

React Cosmos is an open-source sandbox tool for developing and testing React UI components in isolation

FormKit is a form-building framework and API for coding agents, with a Pro add-on of premium inputs, from a small Charlottesville team

Motion, an open-source JavaScript and React animation library with docs, showcase examples and a paid Motion+ component kit

A component library and code distribution platform for building design systems with Park UI, Ark UI and Panda CSS, plus a Figma kit

A React component library company offering free Material UI components and MUI X advanced data tools for building web interfaces

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

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

Fiber, an Express-inspired web framework written in Go and built on the Fasthttp HTTP engine, with documentation and examples

React-Uploady is a lightweight React library and documentation site for building browser file-upload features

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

Personal home page of Eric S. Raymond hosting his open-source software, FAQs, essays and the Retrocomputing Museum

Sergio Xalambr's personal blog of articles, tutorials, short notes, TILs, weekly releases, bookmarks and glossary terms on software development

AVA, a GitHub repository hosting a Node.js test runner for running JavaScript unit tests concurrently

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

MDX is a documentation site for Markdown extended with JSX components, with docs, guides and blog posts

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

Embla Carousel, a lightweight JavaScript library for building swipeable carousels with plugins and server-side rendering

UnoCSS is an on-demand atomic CSS engine documentation site, with guides, config references and presets by Anthony Fu

A component library and Tailwind CSS plugin providing pure-CSS UI components with semantic class names, documentation by its maintainers

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

React Native Elements documentation for an open-source UI component kit used to build React Native apps

Floating UI, a JavaScript library and documentation site for positioning tooltips, popovers and dropdowns next to reference elements

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

Shadcn Builder, a visual tool for building production-ready forms from shadcn/ui components without writing code

Tiptap, a headless open-source rich text editor framework and its commercial cloud platform for building custom editors

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

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

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

Dennis Morello's blog on frontend engineering, covering htmx, CSS, TypeScript, Astro and web accessibility, written from Milan

A French-language project: Docusaurus, an open-source static site generator for building documentation websites with MDX and React

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

Elysia, an ergonomic TypeScript backend web framework with end-to-end type safety, documented on its official site and blog

Biome, an open-source toolchain for web projects that formats, lints, and checks JavaScript, TypeScript, and related code

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

Lucia, a deprecated TypeScript authentication library and its documentation site, with an auth book and replacement code

A design system for Tailwind CSS with ready-made UI components across web frameworks, a documentation and tooling project called Skeleton

Framework7, a free open source framework for building mobile, desktop and web apps with native look and feel

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

A frontend web development newsletter, Web Weekly, covering browser features and web platform news, with no named author

TresJS is an open-source framework for building interactive 3D scenes with Vue, layered on Three.js, documented on its official site

VueUse is a documentation site for a collection of Vue 3 Composition API utility functions and add-ons