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

83Health
Library PyPI

pyparsing

Build recursive-descent parsers in Python without a separate grammar file

2,489
MIT
Used by 11
80Health
Library PyPI

pluggy

The minimalist, production-ready plugin and hook system that powers pytest, tox, and devpi

1,691
MIT
Used by 11
49Health
Tool PyPI

MkDocs

A fast, simple static site generator for building project documentation from Markdown with a single YAML config file.

22,435
Other
Used by 10
67Health
SDK PyPI

ollama-python

The official Python client for chatting, generating, and managing models on a local or cloud-hosted Ollama server.

10,525
MIT
Used by 10
52Health
Library npm

polished

A lightweight, curried toolset of Sass-style color, layout, and math helpers for writing styles in JavaScript.

7,663
MIT
Used by 10
44Health
Library PyPI

backoff

Python function decorators that retry calls on exceptions or bad return values, with exponential, fibonacci, or constant backoff and jitter.

2,694
MIT
Used by 10
87Health
Library PyPI

Pygments

Generic syntax highlighter for Python supporting over 500 languages and formats

2,206
Other
Used by 10
80Health
SDK PyPI

modal-client

Deploy Python functions to serverless GPU and CPU cloud infrastructure with a single decorator.

514
Apache 2.0
Used by 10
65Health
Library PyPI

distro

Linux distribution detection library and CLI, replacing Python's removed platform.linux_distribution()

281
Apache 2.0
Used by 10
92Health
Library PyPI

Polars

Blazingly fast multi-threaded DataFrame library built in Rust with Python, Node.js, and R bindings

39,725
MIT
Used by 9
95Health
SDK PyPI

Elasticsearch Python Client

The official Python client for querying, indexing, and managing an Elasticsearch cluster

4,386
Apache 2.0
Used by 9
70Health
Library PyPI

websocket-client

A low-level, dependency-free WebSocket client for Python supporting both synchronous and event-driven connections.

3,707
Apache 2.0
Used by 9
75Health
Library PyPI

torchaudio

GPU-accelerated audio processing library built on PyTorch, with differentiable transforms, Kaldi-compatible features, and pretrained speech models.

2,938
Other
Used by 9
75Health
Library PyPI

feedparser

Parses RSS, Atom, RDF, CDF, and JSON feeds into one normalized Python dictionary.

2,421
Other
Used by 9
93Health
SDK PyPI

pymilvus

The official Python SDK for Milvus, the open-source vector database for embedding-based similarity search.

1,408
Apache 2.0
Used by 9
89Health
Framework PyPI

OpenAI Agents SDK

OpenAI's provider-agnostic Python framework for building multi-agent LLM workflows with tools, guardrails, and tracing.

29,431
MIT
Used by 8
87Health
Tool PyPI

isort

Automatically sorts and organizes Python import statements

6,951
MIT
Used by 8
94Health
Library PyPI

Werkzeug

The comprehensive WSGI utility library that powers Flask and countless Python web apps.

6,881
BSD 3
Used by 8
84Health
Library PyPI

gevent

Coroutine-based concurrency for Python, built on greenlets and a fast libev/libuv event loop.

6,448
MIT
Used by 8
84Health
Library PyPI

json_repair

Repair malformed JSON from LLMs, APIs, logs, and user input — a drop-in fallback for json.loads().

5,096
MIT
Used by 8
79Health
Library PyPI

python-socketio

Python implementation of the Socket.IO realtime protocol for both servers and clients.

4,369
MIT
Used by 8
77Health
Library PyPI

Markdown

The reference Python implementation of John Gruber's Markdown, with a pluggable extension system for converting text to HTML.

4,246
BSD 3
Used by 8
89Health
Library PyPI

msgspec

A fast, zero-cost serialization and validation library for JSON, MessagePack, YAML, and TOML in Python.

4,105
BSD 3
Used by 8
58Health
Tool PyPI

flake8

The CLI linter that wraps PyFlakes, pycodestyle, and McCabe complexity checks into a single Python style and error checker.

3,823
MIT
Used by 8

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