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

94Health
Library PyPI

scikit-learn

Simple and efficient tools for machine learning and data analysis in Python.

67,403
BSD 3
Used by 28
52Health
Library Go

godotenv

A Go port of Ruby's dotenv that loads environment variables from .env files into your process, with zero third-party dependencies.

10,643
MIT
Used by 27
91Health
Library Go

compress

A Go compression toolkit with a pure-Go Zstandard codec, S2 (a faster Snappy), and assembly-accelerated drop-in replacements for gzip, zip, zlib, and lzw.

5,650
BSD 3
Used by 27
89Health
Tool PyPI

Alembic

Database migrations tool for SQLAlchemy with autogenerate and transactional DDL

4,413
MIT
Used by 27
89Health
Library PyPI

pydantic-settings

Type-safe application settings management for Python, built on Pydantic models.

1,462
MIT
Used by 27
89Health
Framework PyPI

Typer

Typer is a Python library for building CLI applications, using type hints to generate arguments, options, validation, help text, and shell completion automatically.

20,033
MIT
Used by 26
83Health
Library PyPI

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.

8,094
Apache 2.0
Used by 26
96Health
SDK PyPI

sentry-sdk

The official Python SDK for Sentry error tracking, performance monitoring, and tracing.

2,208
MIT
Used by 25
46Health
Library npm

openapi-types

Type-safe TypeScript definitions for OpenAPI 2.0, 3.0, and 3.1 specification documents, covering paths, schemas, and components.

921
MIT
Used by 25
80Health
Library PyPI

idna

Internationalized Domain Names for Python — IDNA 2008 and UTS #46 encoding and decoding

295
BSD 3
Used by 25
87Health
Framework PyPI

Django

The high-level Python web framework that turns database models into secure, working web applications in record time.

91,218
BSD 3
Used by 24
94Health
Library PyPI

pypdf

A pure-Python library for splitting, merging, cropping, transforming, and extracting content from PDF files.

10,232
BSD 3
Used by 24
90Health
Library npm

Scalar API Reference

Interactive, embeddable API reference documentation generated from your OpenAPI or Swagger specs.

16,198
MIT
Used by 23
95Health
SDK Go

go-github

A comprehensive Go client library for the GitHub REST API, covering everything from repos and issues to Actions, Apps, and enterprise admin endpoints.

11,309
BSD 3
Used by 23
74Health
Library PyPI

tenacity

A general-purpose Python retrying library that adds configurable retry behavior to almost anything

8,798
Apache 2.0
Used by 23
81Health
Library PyPI

Charset Normalizer

A pure-Python universal charset detector that turns text of unknown encoding into clean Unicode.

796
MIT
Used by 23
77Health
Framework Go

Gin

A high-performance HTTP web framework for Go, built on a zero-allocation radix-tree router with an Express.js-style API.

89,268
MIT
Used by 22
97Health
Library PyPI

Matplotlib

Python's foundational plotting library for static, animated, and interactive charts

23,294
Other
Used by 22
81Health
Library Go

chi

A lightweight, idiomatic Go HTTP router built entirely on net/http, for composing middleware and mounting REST APIs without a framework.

22,891
MIT
Used by 22
98Health
Library PyPI

SciPy

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

15,046
BSD 3
Used by 22
92Health
Library Go

gopsutil

A Go library that ports Python's psutil, giving programs a pure-Go way to read CPU, memory, disk, network, host, sensor, and process statistics across every major OS.

11,929
BSD 3
Used by 22
88Health
Library Go

go-sqlite3

A self-contained CGO driver that brings SQLite3 to Go's standard database/sql interface.

9,242
MIT
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
97Health
SDK Go

azcore

The core HTTP pipeline, credentials, and error types shared by every Azure SDK for Go client library.

1,855
MIT
Used by 22

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