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

75Health
Library npm

Radix UI

Unstyled, accessible React UI primitives for building your own design system.

19,268
MIT
Used by 181
44Health
Library npm

cmdk

Fast, unstyled command menu and combobox primitives for React.

12,969
MIT
Used by 133
94Health
SDK npm

AWS SDK for JavaScript (S3 Client)

The official modular AWS SDK v3 client for Amazon S3, with TypeScript-first APIs and streaming support.

3,666
Apache 2.0
Used by 129
91Health
Library npm

Recharts

A composable charting library for React, built on D3 and SVG.

27,555
MIT
Used by 127
80Health
Library npm

node-postgres

Non-blocking PostgreSQL client for Node.js with pure JavaScript and native libpq bindings.

13,205
MIT
Used by 120
93Health
Library npm

TanStack Table

Headless, type-safe tables and datagrids for React, Vue, Solid, and more.

28,426
MIT
Used by 116
64Health
Library npm

Sonner

An opinionated, animated toast notification component for React with a tiny imperative API.

12,968
MIT
Used by 116
89Health
Library npm

sharp

High-performance Node.js image processing powered by libvips, built for fast resizing and format conversion.

32,677
Apache 2.0
Used by 109
82Health
Library npm

dnd-kit

A lightweight, extensible React library for building accessible drag-and-drop interfaces.

17,627
MIT
Used by 107
45Health
Library npm

next-themes

Perfect dark mode for React and Next.js apps in two lines of code, with zero flash on load.

6,338
MIT
Used by 97
70Health
Library npm

react-day-picker

A lightweight, fully customizable date picker component for React applications.

6,852
MIT
Used by 96
91Health
Library npm

TanStack Virtual (React)

Headless React hook for virtualizing massive lists, grids, and tables at 60FPS.

7,107
MIT
Used by 82
93Health
Library npm

ioredis

A robust, full-featured Redis client for Node.js with built-in Cluster, Sentinel, and TypeScript support.

15,339
MIT
Used by 81
75Health
Library npm

React Resizable Panels

Resizable, draggable panel group layouts for React with keyboard accessibility and SSR support built in

5,363
MIT
Used by 80
92Health
Library npm

React Flow

A highly customizable React library for building node-based editors, diagrams, and interactive flow charts.

38,371
MIT
Used by 77
53Health
Library npm

@monaco-editor/react

Drop the Monaco code editor into any React app without touching webpack, rollup, or bundler config files.

4,741
MIT
Used by 72
82Health
Library npm

Floating UI

React hooks and components for building accessible, perfectly positioned tooltips, popovers, and dropdowns.

32,745
MIT
Used by 68
77Health
Library npm

React Icons

SVG icon components for React, bundling 40+ popular icon packs behind one consistent import syntax.

12,656
MIT
Used by 64
92Health
Library PyPI

Pillow

The friendly PIL fork that adds image processing capabilities to Python

13,812
Other
Used by 60
91Health
SDK PyPI

boto3

The official AWS SDK for Python — call every Amazon Web Services API from your code.

9,900
Apache 2.0
Used by 59
50Health
Library npm

React Syntax Highlighter

A React component for syntax-highlighting code blocks using highlight.js or Prism ASTs, with JavaScript-based styles and no external stylesheet required.

4,674
MIT
Used by 59
98Health
SDK npm

Google Cloud Storage

Node.js client library for Google Cloud Storage — upload, download, and manage buckets and objects programmatically.

3,195
Apache 2.0
Used by 59
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
91Health
Library npm

react-dropzone

A lightweight React hook for building HTML5-compliant drag-and-drop file upload zones.

11,014
MIT
Used by 56

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