Directory

Open Source Packages

Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.

3103 packages

All Packages

Showing 3103 packages
86Health
Toolnpm

TypeScript

A strongly typed superset of JavaScript that compiles to clean, portable JavaScript.

110,199
Apache 2.0
Used by 469
97Health
Librarynpm

React

The declarative, component-based JavaScript library for building fast, interactive user interfaces on the web and in native apps.

247,416
MIT
Used by 380
97Health
Librarynpm

React DOM

React's official renderer for the DOM and server — createRoot, hydrateRoot, and streaming SSR in one package.

247,416
MIT
Used by 376
90Health
Librarynpm

Tailwind CSS

A utility-first CSS framework for rapidly building custom user interfaces without leaving your markup.

97,279
MIT
Used by 318
94Health
Toolnpm

Vite

Next-generation frontend build tool with an instant dev server, lightning-fast HMR, and optimized production builds.

82,404
MIT
Used by 308
91Health
Toolnpm

prettier

An opinionated code formatter that enforces consistent style across every language your project speaks.

52,204
MIT
Used by 300
93Health
Toolnpm

Vitest

A blazing-fast unit testing framework powered by Vite, with Jest-compatible APIs out of the box.

16,971
MIT
Used by 276
92Health
Librarynpm

postcss

A CSS transformation engine that parses styles into an AST, letting JS plugins lint, prefix, and rewrite CSS — the foundation beneath Autoprefixer, Tailwind, and 200+ other tools.

28,981
MIT
Used by 268
91Health
Librarynpm

Zod

TypeScript-first schema validation with static type inference and zero dependencies.

43,492
MIT
Used by 259
42Health
Librarynpm

clsx

A tiny, fast utility for conditionally constructing className strings

9,832
MIT
Used by 237
77Health
Librarynpm

dotenv

Loads environment variables from a .env file into process.env for Node.js apps.

20,520
Other
Used by 220
87Health
Librarynpm

tailwind-merge

Merge Tailwind CSS classes without style conflicts

5,674
MIT
Used by 202
86Health
Librarynpm

date-fns

Modern JavaScript date utility library with 200+ pure, immutable functions

36,628
MIT
Used by 193
84Health
Librarynpm

Autoprefixer

Parses your CSS and automatically adds vendor prefixes using real-world browser usage data from Can I Use.

22,238
MIT
Used by 192
93Health
Toolnpm

@vitejs/plugin-react

The official Vite plugin for React with Babel-powered Fast Refresh and JSX transforms

1,140
MIT
Used by 192

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