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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FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
React Flow
A highly customizable React library for building node-based editors, diagrams, and interactive flow charts.
Chart.js
Simple, flexible JavaScript charting for designers and developers
highlight.js
Zero-dependency JavaScript syntax highlighter with automatic language detection for over 190 languages.
python-dotenv
Load environment variables from a .env file into Python's os.environ, the standard way to keep 12-factor config out of your code
Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
diff
A battle-tested JavaScript library for computing and applying text diffs at the character, word, line, sentence, CSS, or JSON level.
Electron
Build cross-platform desktop apps with JavaScript, HTML, and CSS on Chromium and Node.js
Pino
A super fast, low-overhead JSON logger for Node.js applications.
JSZip
Create, read, and edit ZIP files directly in JavaScript, in the browser or Node.js.
Fuse.js
Lightweight, zero-dependency fuzzy-search library for JavaScript and TypeScript, in the browser or on the server.
KaTeX
Fast, self-contained JavaScript library for print-quality LaTeX math rendering on the web.
Pillow
The friendly PIL fork that adds image processing capabilities to Python
pandas
The Python DataFrame library for fast, flexible, and expressive data analysis and manipulation.
PapaParse
The fastest in-browser CSV parser for JavaScript, with streaming, Web Workers, and zero dependencies
Faker
Generate massive amounts of realistic fake data for testing, seeding, and mocking in JavaScript and TypeScript.
boto3
The official AWS SDK for Python — call every Amazon Web Services API from your code.
OpenAI Python SDK
The official Python library for the OpenAI REST API, generated from OpenAI's OpenAPI spec with typed sync and async clients.
xterm.js
A fast, self-contained TypeScript library for embedding fully-featured terminals in the browser.
TanStack Router
A fully type-safe React router with built-in data loading, caching, and URL search-param validation.
SWC
Rust-based JavaScript/TypeScript compiler, a drop-in super-fast alternative to Babel
cryptography
The standard cryptographic library for Python, pairing safe high-level recipes with low-level primitives backed by Rust and OpenSSL.
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.
