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

60Health
Tool npm

html-webpack-plugin

Generates and injects your webpack bundle tags into HTML files automatically, with zero configuration required.

10,718
MIT
Used by 37
98Health
Library PyPI

google-auth

The foundational Python library for authenticating to Google Cloud and Google APIs with OAuth2, service accounts, and Application Default Credentials.

5,412
Apache 2.0
Used by 37
56Health
Library npm

react-colorful

A tiny, dependency-free color picker component for React and Preact apps

3,561
MIT
Used by 37
40Health
Library npm

lowlight

Virtual syntax highlighting for virtual DOMs and non-HTML things, powered by highlight.js

927
MIT
Used by 37
81Health
Library npm

@hono/node-server

The official Node.js adapter that runs your Hono application on a native Node HTTP server using web-standard APIs.

682
MIT
Used by 37
44Health
Library npm

remark-math

A unified remark plugin that adds LaTeX math syntax to markdown, ready to render with KaTeX or MathJax.

520
MIT
Used by 37
41Health
Library npm

@swc/jest

A Jest transform that compiles TypeScript and JSX with the Rust-based SWC compiler instead of Babel.

89
MIT
Used by 37
24Health
Library npm

lang-html

HTML language support for the CodeMirror code editor, with autocompletion, folding, and nested CSS/JS parsing.

36
MIT
Used by 37
93Health
Framework npm

Docusaurus

React-based static site generator for building fast, maintainable documentation websites.

66,577
MIT
Used by 36
84Health
Library Go

Logrus

Structured, pluggable logging for Go with a stdlib-compatible API and level-based hooks.

25,763
MIT
Used by 36
51Health
Library npm

Tippy.js

The complete tooltip, popover, dropdown, and menu solution for the web.

12,238
MIT
Used by 36
86Health
Library npm

body-parser

Node.js body-parsing middleware that turns raw HTTP request bodies into ready-to-use req.body objects.

5,500
MIT
Used by 36
65Health
Library npm

mime

Comprehensive, dependency-free MIME type detection and file extension mapping for JavaScript and TypeScript.

2,359
MIT
Used by 36
87Health
SDK npm

Octokit REST

The official GitHub REST API client for JavaScript and TypeScript, with a typed method for every endpoint.

666
MIT
Used by 36
40Health
Library npm

unist-util-visit

Tiny utility to walk unist syntax trees and run a visitor on matching nodes

360
MIT
Used by 36
90Health
Framework npm

tRPC Server

Build end-to-end typesafe APIs in TypeScript with no schemas, no code generation, and zero runtime bloat.

40,718
MIT
Used by 35
51Health
Library npm

heroicons

Hand-crafted MIT-licensed SVG icons from the makers of Tailwind CSS, in outline and solid styles with first-party React and Vue components.

23,878
MIT
Used by 35
49Health
Library Go

mux

A lightweight, http.Handler-compatible Go router that matches requests by path, host, method, headers, and query, and can reverse them back into URLs.

21,836
BSD 3
Used by 35
62Health
Tool npm

mini-css-extract-plugin

A Webpack 5 plugin that extracts imported CSS into separate files per chunk, with async loading, source maps, and on-demand delivery.

4,655
MIT
Used by 35
85Health
Library npm

Moment Timezone

IANA time zone support for Moment.js — parse, convert, and format dates in any zone with automatic DST handling.

3,880
MIT
Used by 35
43Health
Library npm

fflate

High-performance DEFLATE, GZIP, Zlib, and ZIP compression for JavaScript in an 8kB package.

3,065
MIT
Used by 35
81Health
Library Cargo

flate2

Streaming DEFLATE, gzip, and zlib compression for Rust with pluggable backends

1,128
Other
Used by 35
57Health
Library npm

ipaddr.js

A dependency-free JavaScript library for parsing, validating, and manipulating IPv4 and IPv6 addresses.

662
MIT
Used by 35
24Health
Library npm

@codemirror/search

Find, replace, regex search, and match highlighting for the CodeMirror 6 code editor.

26
MIT
Used by 35

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers