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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github-markdown-css
Drop-in CSS that renders any markdown container in GitHub's exact visual style, light or dark.
youtube-transcript-api
Fetch transcripts and auto-generated subtitles for any YouTube video in Python
OAuthLib
Generic, spec-compliant OAuth1, OAuth2, and OpenID Connect implementation for Python
watchfiles
Simple, modern, and fast file watching and code-reload for Python, powered by a Rust core built on the `notify` crate
Blinker
Fast Python in-process signal/event dispatching for decoupled object-to-object notifications
slowapi
Rate limiting for Starlette and FastAPI endpoints, adapted from Flask-Limiter.
tldextract
Accurately splits any URL or hostname into subdomain, domain, and public suffix using the Public Suffix List.
pyOpenSSL
A Python wrapper around the OpenSSL library for TLS connections and certificate handling
build
A simple, correct Python build frontend for producing PEP 517 source distributions and wheels.
python-semver
Parse, compare, and bump semantic version strings in Python
weaviate-python-client
The official Python SDK for Weaviate, with typed sync and async clients for vector search, RAG, and collection management.
Gradio
Build and share machine learning web apps and demos in pure Python.
Deep Agents
The batteries-included agent harness for building long-horizon LLM agents
Tornado
Python web framework and asynchronous networking library built for high concurrency
Pydantic AI
A type-safe Python agent framework built by the Pydantic team
IPython
A productive interactive Python shell with rich introspection, tab completion, and magic commands.
SymPy
Full-featured computer algebra system (CAS) written entirely in pure Python
RQ
Simple Python library for queueing jobs and processing them in the background with Redis or Valkey workers
hypothesis
Property-based testing for Python that generates edge cases and shrinks failures to their simplest reproducing example.
pendulum
A drop-in replacement for Python's datetime with timezone-aware objects by default and a friendlier API.
Pylint
A static code analyser for Python that catches bugs and enforces coding standards
Granian
A fast Rust HTTP server for Python that serves ASGI, WSGI, and RSGI applications
fake-useragent
Up-to-date user-agent string faker backed by a real-world browser usage database, bundled offline.
Pika
Pure Python RabbitMQ/AMQP 0-9-1 client library
