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

91Health
Tool npm

prettier

An opinionated code formatter that enforces consistent style across every language your project speaks.

52,316
MIT
Used by 310
91Health
Tool PyPI

Uvicorn

A lightning-fast ASGI server for Python, built on uvloop and httptools.

10,993
BSD 3
Used by 83
90Health
Tool PyPI

Ruff

An extremely fast Python linter and code formatter, written in Rust, built as a drop-in replacement for Flake8, Black, isort, and dozens of plugins.

49,811
MIT
Used by 46
88Health
Tool PyPI

Gunicorn

A fast, lightweight pre-fork WSGI and ASGI HTTP server for running Python web apps in production on UNIX.

10,686
MIT
Used by 33
94Health
Tool npm

mocha

The classic, battle-tested JavaScript test framework for Node.js and the browser, built around flexible async testing and pluggable reporters.

22,896
MIT
Used by 30
83Health
Tool PyPI

mypy

Optional static type checker that catches Python bugs before you run your code

20,651
MIT
Used by 30
89Health
Tool PyPI

Alembic

Database migrations tool for SQLAlchemy with autogenerate and transactional DDL

4,413
MIT
Used by 27
83Health
Tool npm

svgo

A Node.js library and command-line tool that optimizes SVG files by removing redundant markup through a configurable plugin pipeline.

22,703
MIT
Used by 23
93Health
Tool npm

nest-cli

Scaffolds, builds, and serves NestJS applications through schematics-driven code generation and pluggable compiler backends.

2,199
MIT
Used by 19
83Health
Tool npm

openapi-ts

OpenAPI-to-TypeScript code generator producing production-grade SDKs, Zod schemas, and TanStack Query hooks.

5,450
MIT
Used by 14
94Health
Tool Composer

PHP CS Fixer

CLI tool that automatically fixes PHP code to follow coding standards

13,556
MIT
Used by 11
86Health
Tool npm

js-beautify

Reformats and re-indents JavaScript, HTML, and CSS into clean, readable code

8,999
MIT
Used by 11
62Health
Tool npm

jest-junit

A Jest reporter that converts test results into JUnit-compatible XML for CI dashboards and test-analytics tools.

502
Apache 2.0
Used by 11
51Health
Tool PyPI

MkDocs

A fast, simple static site generator for building project documentation from Markdown with a single YAML config file.

22,470
Other
Used by 10
92Health
Tool PyPI

isort

Automatically sorts and organizes Python import statements

6,953
MIT
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
91Health
Tool npm

verdaccio

A lightweight, zero-config-required private npm registry with built-in caching and proxying of public registries.

17,898
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
Tool PyPI

build

A simple, correct Python build frontend for producing PEP 517 source distributions and wheels.

857
MIT
Used by 6
90Health
Tool PyPI

IPython

A productive interactive Python shell with rich introspection, tab completion, and magic commands.

16,787
BSD 3
Used by 5
83Health
Tool npm

quicktype

Generate strongly-typed models and serializers from JSON, Schema, TypeScript, or GraphQL

13,877
Apache 2.0
Used by 5
94Health
Tool Go

Open Policy Agent (OPA)

Open source policy engine for unified authorization and compliance decisions across your stack.

12,280
Apache 2.0
Used by 5
86Health
Tool PyPI

pip

The official package installer for Python, bundled with the interpreter

10,287
MIT
Used by 5
97Health
Tool npm

npm

The default command-line package manager for Node.js and the JavaScript ecosystem

10,156
Used by 5

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