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

92Health
Library PyPI

Pillow

The friendly PIL fork that adds image processing capabilities to Python

13,856
Other
Used by 62
98Health
Library PyPI

pandas

The Python DataFrame library for fast, flexible, and expressive data analysis and manipulation.

49,851
BSD 3
Used by 61
91Health
SDK PyPI

boto3

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

9,909
Apache 2.0
Used by 60
97Health
SDK PyPI

OpenAI Python SDK

The official Python library for the OpenAI REST API, generated from OpenAI's OpenAPI spec with typed sync and async clients.

31,709
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
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
91Health
Library npm

react-dropzone

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

11,012
MIT
Used by 56
49Health
Library npm

prism-react-renderer

A lightweight, themeable Prism syntax highlighter for React and React Native, built on a render-props API.

1,995
MIT
Used by 55
84Health
Library PyPI

cryptography

The standard cryptographic library for Python, pairing safe high-level recipes with low-level primitives backed by Rust and OpenSSL.

7,786
Other
Used by 54
75Health
Library npm

React CodeMirror

A fully-typed React component and hook for embedding the CodeMirror 6 code editor with themes and language extensions.

2,253
MIT
Used by 54
90Health
Library npm

React Email

High-quality, unstyled React components for building responsive HTML emails

19,788
MIT
Used by 51
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
88Health
Library PyPI

Click

A composable Python toolkit for building command line interfaces with minimal boilerplate.

17,770
BSD 3
Used by 50
55Health
Library npm

Headless UI

Unstyled, fully accessible UI components for React and Vue, built for Tailwind CSS

28,758
MIT
Used by 49
48Health
Library npm

Vaul

An unstyled, physics-based drawer component for React, built on Radix UI's Dialog primitive.

8,626
MIT
Used by 49
76Health
Library npm

react-error-boundary

Reusable React error boundary component that catches rendering errors and shows a fallback UI.

7,993
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.

4,064
MIT
Used by 48
73Health
Library PyPI

python-dateutil

Powerful extensions to Python's datetime module for parsing, deltas, recurrence, and timezones.

2,637
Other
Used by 48
57Health
Library PyPI

rich

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

57,443
MIT
Used by 47
88Health
Library npm

Base UI

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

10,997
MIT
Used by 47
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.

49,811
MIT
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
53Health
Library PyPI

Jinja

A fast, expressive, and extensible templating engine for Python.

11,789
BSD 3
Used by 45
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

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