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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websockets
Build correct, fast WebSocket servers and clients in Python with asyncio, threading, or Sans-I/O APIs.
zod-to-json-schema
Converts Zod validation schemas into standard JSON Schema, ready for OpenAPI, OpenAI, and JSON Schema draft 7 consumers.
Psycopg
The modern PostgreSQL adapter for Python, with native async and pipeline support
Flask
A lightweight WSGI web framework for Python that scales from a single file to complex applications.
scikit-learn
Simple and efficient tools for machine learning and data analysis in Python.
JSON5
JSON for humans: an extended JSON syntax with comments, trailing commas, and unquoted keys for hand-written config.
jsonschema
The reference implementation of JSON Schema validation for Python, supporting every draft from 3 to 2020-12.
Alembic
Database migrations tool for SQLAlchemy with autogenerate and transactional DDL
pydantic-settings
Type-safe application settings management for Python, built on Pydantic models.
Typer
Typer is a Python library for building CLI applications, using type hints to generate arguments, options, validation, help text, and shell completion automatically.
asyncpg
A fast PostgreSQL database client library for Python built directly on asyncio, implementing the PostgreSQL binary wire protocol natively for high-throughput async applications.
Fastify
A fast and low-overhead web framework for Node.js, built around schema-based validation and a plugin architecture
sentry-sdk
The official Python SDK for Sentry error tracking, performance monitoring, and tracing.
idna
Internationalized Domain Names for Python — IDNA 2008 and UTS #46 encoding and decoding
Django
The high-level Python web framework that turns database models into secure, working web applications in record time.
pypdf
A pure-Python library for splitting, merging, cropping, transforming, and extracting content from PDF files.
tenacity
A general-purpose Python retrying library that adds configurable retry behavior to almost anything
Charset Normalizer
A pure-Python universal charset detector that turns text of unknown encoding into clean Unicode.
Matplotlib
Python's foundational plotting library for static, animated, and interactive charts
gjson
Fast, dependency-light JSON value extraction for Go using dot-notation paths.
SciPy
Fundamental algorithms for scientific computing, optimization, and statistics in Python.
attrs
Python classes without boilerplate — generate init, repr, equality, and more from declarative field definitions.
LangChain
The most widely adopted Python framework for building LLM-powered agents and applications
Laravel
The expressive, elegant PHP framework for building modern web applications
