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

98Health
Library PyPI

SciPy

Fundamental algorithms for scientific computing, optimization, and statistics in Python.

15,046
BSD 3
Used by 22
80Health
Library PyPI

attrs

Python classes without boilerplate — generate init, repr, equality, and more from declarative field definitions.

5,846
MIT
Used by 22
92Health
Framework PyPI

LangChain

The most widely adopted Python framework for building LLM-powered agents and applications

147,170
MIT
Used by 21
71Health
Library PyPI

loguru

A drop-in replacement for Python's standard logging module that makes logging enjoyable, with almost no setup required.

24,134
MIT
Used by 21
94Health
Framework PyPI

Starlette

A lightweight ASGI framework/toolkit for building async web services and apps in Python

12,639
BSD 3
Used by 21
89Health
Library PyPI

filelock

A platform-independent file lock for Python that supports the with-statement.

978
MIT
Used by 21
90Health
SDK PyPI

docker-py

Official Python library for the Docker Engine API — manage containers, images, networks, and Swarm clusters from your own code.

7,214
Apache 2.0
Used by 20
45Health
Library PyPI

markupsafe

Escapes untrusted strings for safe use in HTML and XML markup, preventing injection attacks in templated output.

697
BSD 3
Used by 20
38Health
Library npm

minimist

A lightweight, dependency-free argument parser that turns process.argv into a clean options object.

661
MIT
Used by 20
68Health
Library PyPI

orjson

A fast, correct, Rust-backed JSON library for Python with native dataclass, datetime, and numpy support

8,234
Apache 2.0
Used by 19
47Health
Library npm

tinycolor2

Fast, dependency-free color parsing, conversion, and manipulation for JavaScript

5,251
MIT
Used by 19
61Health
Library npm

Croner

A zero-dependency cron job scheduler and cron-expression evaluator for JavaScript and TypeScript

2,596
MIT
Used by 19
52Health
Library Cargo

csv

Fast, flexible CSV reading and writing for Rust, with Serde support

1,960
Other
Used by 19
47Health
Library PyPI

tomli

A lil' TOML parser for Python — fast, spec-compliant, and dependency-free.

572
MIT
Used by 19
92Health
Framework PyPI

LangGraph

A low-level orchestration framework for building stateful, multi-actor LLM agents as graphs

42,375
MIT
Used by 18
91Health
Library PyPI

Pygments

Generic syntax highlighter for Python supporting over 500 languages and formats

2,211
Other
Used by 18
98Health
SDK PyPI

Azure Container Service Management (Python)

Provision and manage Azure Kubernetes Service and container clusters from Python.

5,609
MIT
Used by 17
77Health
Library npm

smol-toml

A small, fast, spec-compliant TOML parser and serializer for JavaScript

311
BSD 3
Used by 17
91Health
Library PyPI

Celery

Distributed task queue for running asynchronous jobs, scheduled work, and complex workflows across Python applications at scale.

28,914
BSD 3
Used by 16
75Health
Library PyPI

bcrypt (Python)

A Python library for secure password hashing using the bcrypt algorithm with an adjustable work factor

1,501
Apache 2.0
Used by 16
91Health
Framework PyPI

django-rest-framework

The most widely-used toolkit for building Web APIs on top of Django, with serializers, viewsets, and a built-in browsable API.

30,191
BSD 3
Used by 15
98Health
SDK PyPI

Azure Identity (Python)

Microsoft Entra ID token authentication for Azure SDK clients in Python

5,609
MIT
Used by 15
46Health
Library PyPI

itsdangerous

A small Python toolkit for cryptographically signing data so you can trust it hasn't been tampered with when it comes back from an untrusted client.

3,135
BSD 3
Used by 15
40Health
Library PyPI

aiosqlite

Async/await-friendly wrapper around Python's built-in sqlite3 module for asyncio applications.

1,576
MIT
Used by 15

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