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

85Health
Library npm

Pino

A super fast, low-overhead JSON logger for Node.js applications.

18,227
MIT
Used by 67
67Health
Library npm

JSZip

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

10,386
Other
Used by 66
69Health
Library npm

Fuse.js

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

20,491
Apache 2.0
Used by 65
92Health
Library npm

KaTeX

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

20,405
MIT
Used by 65
79Health
Library npm

PapaParse

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

13,576
MIT
Used by 61
91Health
Library npm

Faker

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

15,502
MIT
Used by 60
89Health
Library npm

xterm.js

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

21,228
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.

15,136
MIT
Used by 57
90Health
Tool npm

SWC

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

34,208
Apache 2.0
Used by 56
81Health
Library npm

RxJS

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

31,704
Apache 2.0
Used by 53
78Health
Library npm

markdown-it

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

21,945
MIT
Used by 52
50Health
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
82Health
Library npm

Embla Carousel React

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

8,429
MIT
Used by 51
58Health
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.

25,536
MIT
Used by 50
60Health
Library npm

Winston

A battle-tested Node.js logging library with pluggable transports, custom formats, and multiple log levels.

24,519
MIT
Used by 50
74Health
Library npm

qs

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

8,943
BSD 3
Used by 49
71Health
Library npm

remark

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

9,008
MIT
Used by 48
91Health
Library npm

Prisma Client

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

47,678
Apache 2.0
Used by 46
55Health
Library npm

reflect-metadata

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

3,361
Apache 2.0
Used by 46
82Health
Library npm

react-hotkeys-hook

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

3,503
MIT
Used by 45
86Health
Library PyPI

PyJWT

A Python implementation of RFC 7519 for encoding, decoding, and verifying JSON Web Tokens.

5,706
MIT
Used by 44
48Health
Library npm

unified

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

5,036
MIT
Used by 44
76Health
Library npm

file-type

Detect the file type of a buffer, stream, or file by reading its magic number.

4,325
MIT
Used by 44

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