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

54Health
Library PyPI

CleverCSV

A drop-in replacement for Python's csv module that detects the dialect of messy, real-world CSV files with far higher accuracy than the standard library.

1,334
MIT
Used by 1
83Health
Library PyPI

JPype

A native bridge that gives Python programs direct, in-process access to the full Java class library and JVM.

1,293
Apache 2.0
Used by 1
45Health
Library PyPI

redis-py-cluster

A Python client for Redis Cluster, extending redis-py with cluster-aware routing, pipelining, and pub/sub.

1,094
MIT
Used by 1
71Health
Library PyPI

imap_tools

A high-level Python library for reading, searching, and managing email over IMAP without hand-rolling imaplib calls.

844
Apache 2.0
Used by 1
65Health
Library PyPI

python-rapidjson

Fast Python JSON parsing and serialization powered by the RapidJSON C++ library

532
MIT
Used by 1
88Health
SDK PyPI

FalconPy

The official Python SDK for the CrowdStrike Falcon platform, wrapping every OAuth2 API operation in typed, testable service classes.

515
Other
Used by 1
45Health
Library PyPI

Python Xlib

A pure-Python implementation of the X11 protocol for talking to an X server.

464
LGPL-2.1
Used by 1
38Health
Library PyPI

typing_inspect

Runtime introspection helpers for Python's typing module — detect generics, unions, and type variables reliably.

375
MIT
Used by 1
43Health
SDK PyPI

python-youtube

A Python SDK for the YouTube Data API v3, with OAuth2 auth, typed models, and full resource coverage.

353
MIT
Used by 1
53Health
Library PyPI

CloudEvents

The official Python SDK for building, validating, and converting CloudEvents across HTTP, Kafka, AMQP, and RabbitMQ.

342
Apache 2.0
Used by 1
44Health
Library PyPI

dnslib

A pure-Python library for encoding, decoding, and building DNS wire-format packets, with a lightweight framework for writing custom DNS servers.

326
Other
Used by 1
36Health
Library PyPI

aioitertools

Implementation of itertools, builtins, and more for asyncio and mixed iterables.

278
MIT
Used by 1
39Health
Tool PyPI

bigquery-schema-generator

Deduces an accurate BigQuery schema from your full JSON or CSV dataset instead of just the first 500 records.

249
Apache 2.0
Used by 1
80Health
Library PyPI

Azure Functions Python Library

The Python programming model for Azure Functions: triggers, bindings, and typed request/response objects.

179
MIT
Used by 1
43Health
Library PyPI

pyjson5

A fast JSON5 serializer and parser for Python 3, implemented in Cython with a C++ core.

179
Apache 2.0
Used by 1
64Health
SDK PyPI

Duo Client

Official Python SDK for the Duo Security Auth, Admin, and Accounts REST APIs.

150
BSD 3
Used by 1
74Health
SDK PyPI

AlibabaCloud ADB20211201

Official Python SDK for Alibaba Cloud AnalyticDB (ADB) for MySQL, generated from the AnalyticDB 2021-12-01 OpenAPI specification.

139
Apache 2.0
Used by 1
38Health
Library PyPI

kgb

Function spies for Python unit tests that intercept, record, and reroute calls without heavy-handed mocking.

53
MIT
Used by 1
39Health
Library PyPI

BlendModes

Apply Photoshop-style layer blend modes to images in Python with NumPy and Pillow

38
MIT
Used by 1
36Health
Library PyPI

retryhttp

Retry transient HTTP errors in httpx, requests, and aiohttp with sensible, fully customizable defaults.

14
Apache 2.0
Used by 1

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