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

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.

49,630
MIT
Used by 46
95Health
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
84Health
Tool npm

svgo

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

22,669
MIT
Used by 23
94Health
Tool npm

nest-cli

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

2,197
MIT
Used by 19
90Health
Tool npm

js-beautify

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

8,995
MIT
Used by 11
56Health
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
87Health
Tool PyPI

isort

Automatically sorts and organizes Python import statements

6,951
MIT
Used by 8
58Health
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
69Health
Tool npm

@vitejs/plugin-basic-ssl

A Vite plugin that generates a self-signed certificate so your dev and preview servers can run over HTTPS with zero setup.

516
MIT
Used by 8
90Health
Tool npm

verdaccio

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

17,881
MIT
Used by 7
98Health
Tool npm

npm

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

10,114
Used by 5
90Health
Tool npm

moon

A Rust-based build system and monorepo orchestrator that manages toolchains, tasks, caching, and CI pipelines across the JavaScript, TypeScript, and polyglot ecosystem.

4,100
MIT
Used by 2
38Health
Tool PyPI

ghp-import

A small CLI that copies a built docs directory straight onto your repo's gh-pages branch.

626
Apache 2.0
Used by 2
65Health
Tool PyPI

toml-sort

A command-line utility and Python library that sorts and formats TOML files while preserving comments.

116
MIT
Used by 2
90Health
Tool PyPI

jsbeautifier

The official Python port of js-beautify for beautifying, unpacking, and deobfuscating JavaScript

8,995
MIT
Used by 1
74Health
Tool npm

memlab

Meta's end-to-end framework for finding JavaScript memory leaks and analyzing heap snapshots

5,047
MIT
Used by 1
48Health
Tool npm

CMake.js

A CMake-based build tool for compiling Node.js native C/C++ addons

956
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
73Health
Tool npm

rails-erb-loader

A webpack loader that compiles embedded Ruby (.erb) templates into JavaScript for Rails projects.

105
MIT
Used by 1
69Health
Tool npm

@elastic/opentelemetry-node

Elastic's zero-code OpenTelemetry distribution for Node.js, giving production apps tracing, metrics, and logs with a single --import flag.

12
Apache 2.0
Used by 1
87Health
Tool npm

Repomix

Packs an entire repository into a single AI-friendly file, complete with token counts, secret scanning, and an MCP server for direct AI assistant access.

28,391
MIT

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