Directory

Open Source Packages

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

5929 packages

All Packages

71Health
Library npm

Fuse.js

Lightweight, zero-dependency fuzzy-search library for JavaScript and TypeScript, in the browser or on the server.

20,479
Apache 2.0
Used by 65
92Health
Library npm

KaTeX

Fast, self-contained JavaScript library for print-quality LaTeX math rendering on the web.

20,387
MIT
Used by 65
69Health
Library npm

JSZip

Create, read, and edit ZIP files directly in JavaScript, in the browser or Node.js.

10,383
Other
Used by 65
81Health
Library npm

PapaParse

The fastest in-browser CSV parser for JavaScript, with streaming, Web Workers, and zero dependencies

13,568
MIT
Used by 61
91Health
Library npm

Faker

Generate massive amounts of realistic fake data for testing, seeding, and mocking in JavaScript and TypeScript.

15,486
MIT
Used by 60
90Health
Library npm

xterm.js

A fast, self-contained TypeScript library for embedding fully-featured terminals in the browser.

21,173
MIT
Used by 57
94Health
Framework npm

TanStack Router

A fully type-safe React router with built-in data loading, caching, and URL search-param validation.

15,081
MIT
Used by 56
90Health
Tool npm

SWC

Rust-based JavaScript/TypeScript compiler, a drop-in super-fast alternative to Babel

34,191
Apache 2.0
Used by 55
82Health
Library npm

RxJS

The standard library for composing asynchronous and event-based programs using observable sequences

31,698
Apache 2.0
Used by 53
79Health
Library npm

markdown-it

A fast, pluggable CommonMark-compliant Markdown parser and renderer for JavaScript, safe by default.

21,901
MIT
Used by 52
51Health
Library npm

cookie-parser

Express middleware that parses HTTP Cookie headers into req.cookies, with support for signed and JSON-encoded cookie values.

2,030
MIT
Used by 52
83Health
Library npm

Embla Carousel React

A lightweight, dependency-free React hook for building fluid, touch-precise carousels and sliders.

8,414
MIT
Used by 51
56Health
Library npm

bcrypt.js

A zero-dependency, pure JavaScript implementation of bcrypt for hashing and verifying passwords in Node.js and the browser.

3,797
BSD 3
Used by 51
91Health
Library npm

core-js

Modular standard library and polyfills for JavaScript, from ECMAScript features to proposals and web standards.

25,531
MIT
Used by 50
75Health
Library npm

qs

A battle-tested querystring parser and serializer for Node.js with nested object support and built-in security limits.

8,940
BSD 3
Used by 49
66Health
Library npm

remark

A plugin-powered markdown processor that parses, transforms, and serializes markdown on top of unified.

8,995
MIT
Used by 48
93Health
Library PyPI

urllib3

A powerful, user-friendly HTTP client for Python with thread-safe connection pooling, TLS verification, and retry handling.

4,058
MIT
Used by 48
68Health
Library npm

proxy-agent

Maps HTTP, HTTPS, SOCKS, and PAC proxy protocols to the correct Node.js http.Agent implementation automatically.

1,161
MIT
Used by 47
62Health
Library PyPI

rich

A Python library for rendering rich text, tables, progress bars, and syntax-highlighted code in the terminal.

57,363
MIT
Used by 46
90Health
Tool PyPI

Ruff

An extremely fast Python linter and code formatter, written in Rust, built as a drop-in replacement for Flake8, Black, isort, and dozens of plugins.

49,630
MIT
Used by 46
90Health
Library npm

Prisma Client

Auto-generated, type-safe database client for Node.js and TypeScript.

47,610
Apache 2.0
Used by 46
57Health
Library npm

reflect-metadata

A polyfill for the Metadata Reflection API that powers decorator metadata in TypeScript and JavaScript.

3,360
Apache 2.0
Used by 46
86Health
Library npm

react-hotkeys-hook

A lightweight React hook for wiring up keyboard shortcuts in components declaratively.

3,505
MIT
Used by 45
48Health
Library npm

unified

Parse, inspect, transform, and serialize content through syntax-tree plugins.

5,030
MIT
Used by 44

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