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

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
75Health
Library npm

input-otp

Accessible, unstyled one-time password input component for React with full keyboard, paste, and password-manager support.

3,263
MIT
Used by 46
40Health
Library npm

prop-types

Runtime type checking for React component props, warning in development when data doesn't match the declared shape.

4,446
MIT
Used by 45
82Health
Library npm

react-hotkeys-hook

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

3,503
MIT
Used by 45
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
83Health
Library npm

SWR

React Hooks for data fetching with built-in caching, revalidation, and real-time updates

32,494
MIT
Used by 43
91Health
Library npm

Tabler Icons React

6000+ free MIT-licensed SVG icons as tree-shakable React components with customizable size, color, and stroke.

21,799
MIT
Used by 43
90Health
Library npm

Inquirer.js

Interactive command-line prompts for Node.js — lists, checkboxes, confirms, and more with a single async API.

21,630
MIT
Used by 43
77Health
Library npm

execa

A modern process-execution library for Node.js with template-string syntax and zero shell-injection risk.

7,609
MIT
Used by 43
59Health
Library npm

react-select

The flexible, accessible Select control for React with multi-select, async, and creatable options.

28,028
MIT
Used by 42
88Health
Library npm

React Aria

Unstyled, accessible React hooks and components for building your own design system.

15,894
Apache 2.0
Used by 42
44Health
Library npm

buffer

The Node.js Buffer API, reimplemented for the browser on top of Uint8Array.

1,891
MIT
Used by 42
91Health
Library npm

React Redux

Official React bindings for Redux — performant, flexible hooks and Provider for connecting components to your store.

23,427
MIT
Used by 41
53Health
Library npm

React DnD

A set of React hooks and utilities for building complex drag-and-drop interfaces without coupling your components to the DOM.

21,628
MIT
Used by 41
46Health
Tool npm

npm-run-all

A cross-platform CLI that runs multiple npm-scripts in parallel or in sequence, replacing fragile shell operators like && with Windows-safe orchestration.

5,834
MIT
Used by 41
50Health
Library npm

mime-types

The ultimate JavaScript content-type utility for resolving MIME types from file extensions and paths.

1,476
MIT
Used by 41
74Health
Library npm

js-cookie

A simple, lightweight JavaScript API for handling browser cookies, client-side.

22,588
MIT
Used by 40
59Health
Library npm

Archiver

A streaming Node.js library for generating ZIP and TAR archives on the fly

2,977
MIT
Used by 40
95Health
Library npm

Socket.IO

Bidirectional, low-latency, event-based realtime communication for Node.js and the browser.

63,210
MIT
Used by 39
57Health
Library npm

use-debounce

Tiny, tree-shakeable React hooks for debouncing and throttling values and callbacks.

3,384
MIT
Used by 39
72Health
Library npm

turndown

Convert HTML into clean, customizable Markdown in Node.js and the browser.

11,451
MIT
Used by 38
90Health
SDK npm

@clickhouse/client

The official TypeScript client for connecting Node.js applications to ClickHouse over HTTP.

332
Apache 2.0
Used by 38

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers