Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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React CodeMirror
A fully-typed React component and hook for embedding the CodeMirror 6 code editor with themes and language extensions.
RxJS
The standard library for composing asynchronous and event-based programs using observable sequences
markdown-it
A fast, pluggable CommonMark-compliant Markdown parser and renderer for JavaScript, safe by default.
cookie-parser
Express middleware that parses HTTP Cookie headers into req.cookies, with support for signed and JSON-encoded cookie values.
React Email
High-quality, unstyled React components for building responsive HTML emails
Embla Carousel React
A lightweight, dependency-free React hook for building fluid, touch-precise carousels and sliders.
bcrypt.js
A zero-dependency, pure JavaScript implementation of bcrypt for hashing and verifying passwords in Node.js and the browser.
core-js
Modular standard library and polyfills for JavaScript, from ECMAScript features to proposals and web standards.
Click
A composable Python toolkit for building command line interfaces with minimal boilerplate.
Headless UI
Unstyled, fully accessible UI components for React and Vue, built for Tailwind CSS
qs
A battle-tested querystring parser and serializer for Node.js with nested object support and built-in security limits.
Vaul
An unstyled, physics-based drawer component for React, built on Radix UI's Dialog primitive.
remark
A plugin-powered markdown processor that parses, transforms, and serializes markdown on top of unified.
react-error-boundary
Reusable React error boundary component that catches rendering errors and shows a fallback UI.
urllib3
A powerful, user-friendly HTTP client for Python with thread-safe connection pooling, TLS verification, and retry handling.
python-dateutil
Powerful extensions to Python's datetime module for parsing, deltas, recurrence, and timezones.
rich
A Python library for rendering rich text, tables, progress bars, and syntax-highlighted code in the terminal.
Base UI
Unstyled, accessible React components and low-level hooks for building your own design system.
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.
Prisma Client
Auto-generated, type-safe database client for Node.js and TypeScript.
reflect-metadata
A polyfill for the Metadata Reflection API that powers decorator metadata in TypeScript and JavaScript.
input-otp
Accessible, unstyled one-time password input component for React with full keyboard, paste, and password-manager support.
Jinja
A fast, expressive, and extensible templating engine for Python.
prop-types
Runtime type checking for React component props, warning in development when data doesn't match the declared shape.
