Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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Sentry JavaScript (@sentry/browser)
The official Sentry SDK for capturing errors, performance traces, and session replays in browser JavaScript apps.
dnd-kit
A lightweight, extensible React library for building accessible drag-and-drop interfaces.
AI SDK
Provider-agnostic TypeScript toolkit for building AI apps and agents with any LLM.
js-yaml
A fast, complete YAML 1.2 and 1.1 parser and serializer for JavaScript.
react-i18next
React bindings for the i18next internationalization ecosystem, built on hooks and a translation-aware Trans component.
yaml
A definitive TypeScript parser and stringifier for YAML, supporting 1.1 and 1.2 with comment and CST access.
next-themes
Perfect dark mode for React and Next.js apps in two lines of code, with zero flash on load.
react-day-picker
A lightweight, fully customizable date picker component for React applications.
Commander.js
The complete, battle-tested framework for building Node.js command-line interfaces.
Storybook
The industry-standard workshop for building, documenting, and testing UI components in isolation, across every major frontend framework.
TanStack Virtual (React)
Headless React hook for virtualizing massive lists, grids, and tables at 60FPS.
Tiptap Core
Headless, framework-agnostic rich text editor toolkit built on ProseMirror
React Resizable Panels
Resizable, draggable panel group layouts for React with keyboard accessibility and SSR support built in
React Flow
A highly customizable React library for building node-based editors, diagrams, and interactive flow charts.
@monaco-editor/react
Drop the Monaco code editor into any React app without touching webpack, rollup, or bundler config files.
Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
Floating UI
React hooks and components for building accessible, perfectly positioned tooltips, popovers, and dropdowns.
MDX
The compiler that lets you write JSX directly inside Markdown documents
classnames
A tiny utility for conditionally joining CSS class names together.
Emotion
Performant, flexible CSS-in-JS styling for React with the css prop, theming, and SSR support
eslint-plugin-jsx-a11y
Static ESLint rules that catch JSX accessibility issues before code ships.
React Icons
SVG icon components for React, bundling 40+ popular icon packs behind one consistent import syntax.
url
A WHATWG-standard-compliant URL parser and manipulation library for Rust.
PapaParse
The fastest in-browser CSV parser for JavaScript, with streaming, Web Workers, and zero dependencies
