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

88Health
Library PyPI

gevent

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

6,447
MIT
Used by 8
85Health
Library PyPI

json_repair

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

5,113
MIT
Used by 8
82Health
Library PyPI

python-socketio

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

4,371
MIT
Used by 8
81Health
Library PyPI

Markdown

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

4,253
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.

4,129
BSD 3
Used by 8
69Health
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
49Health
Library PyPI

html2text

Converts HTML into clean, readable Markdown-formatted plain text, as both a Python library and a CLI tool.

2,173
GPL 3.0
Used by 8
85Health
SDK Composer

Sentry for Laravel

Official Sentry SDK for Laravel with automatic error, log, and performance tracing capture

1,352
MIT
Used by 8
88Health
Library PyPI

PyMdown Extensions

A rich extension pack for Python-Markdown adding tabs, superfences, emoji, and more

1,130
MIT
Used by 8
36Health
SDK PyPI

aioboto3

An async wrapper around boto3's high-level AWS resources, backed by aiobotocore

1,003
Apache 2.0
Used by 8
48Health
Library PyPI

Flask-CORS

Cross-Origin Resource Sharing (CORS) support for Flask applications

933
MIT
Used by 8
67Health
Library PyPI

argon2-cffi

Secure, high-level password hashing for Python using Argon2

731
MIT
Used by 8
87Health
Library Composer

Monolog

The PSR-3 logging library that sends PHP logs to files, sockets, databases, and dozens of web services

21,402
MIT
Used by 7
93Health
Library PyPI

Faker

A Python library that generates realistic fake data for testing, seeding, and anonymizing datasets across 70+ locales.

19,412
MIT
Used by 7
92Health
Library Composer

Laravel Excel

Supercharged Excel and CSV exports and imports for Laravel applications

12,705
MIT
Used by 7
79Health
Tool PyPI

Sphinx

A documentation generator that turns reStructuredText or Markdown sources into polished HTML, PDF, EPUB, and more.

8,035
Other
Used by 7
89Health
Library Composer

Predis

A flexible, pure-PHP Redis and Valkey client with clustering and replication support

7,779
MIT
Used by 7
83Health
SDK PyPI

PyGithub

A typed Python library for the GitHub REST API, wrapping repositories, issues, pull requests, and organizations as lazy-loading objects.

7,779
Other
Used by 7
87Health
Library Composer

league/csv

CSV data manipulation made easy in PHP

3,483
MIT
Used by 7
67Health
Library PyPI

ddgs

A Python metasearch library that aggregates text, image, news, and video search results

2,992
MIT
Used by 7
53Health
Library PyPI

django-storages

Pluggable cloud and remote storage backends for Django's file storage API

2,959
BSD 3
Used by 7
70Health
Library PyPI

watchfiles

Simple, modern, and fast file watching and code-reload for Python, powered by a Rust core built on the `notify` crate

2,542
MIT
Used by 7
74Health
SDK PyPI

Tavily Python

Official Python SDK for Tavily's search, extract, crawl, and research API

1,410
MIT
Used by 7
90Health
Library PyPI

ipykernel

The IPython kernel that lets Jupyter notebooks, JupyterLab, and other frontends run and interact with Python code.

733
BSD 3
Used by 7

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers