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

75Health
Library npm

qs

A battle-tested querystring parser and serializer for Node.js with nested object support and built-in security limits.

8,940
BSD 3
Used by 49
66Health
Library npm

remark

A plugin-powered markdown processor that parses, transforms, and serializes markdown on top of unified.

8,995
MIT
Used by 48
90Health
Library npm

Prisma Client

Auto-generated, type-safe database client for Node.js and TypeScript.

47,610
Apache 2.0
Used by 46
48Health
Library npm

unified

Parse, inspect, transform, and serialize content through syntax-tree plugins.

5,030
MIT
Used by 44
69Health
Library npm

query-string

Parse and stringify URL query strings in JavaScript with flexible array, number, and boolean handling.

6,906
MIT
Used by 27
50Health
Library npm

rehype

A unified-based HTML processor with a large plugin ecosystem

2,255
MIT
Used by 15
42Health
Library npm

GSAP

The industry-standard JavaScript animation library for tweening CSS, SVG, canvas, and UI with rock-solid cross-browser reliability.

28,405
Other
Used by 11
55Health
SDK npm

msgraph-sdk-javascript

Official Microsoft Graph JavaScript SDK for calling the Graph API from Node.js and the browser.

833
MIT
Used by 8
41Health
Library npm

serialize-error

Serialize and deserialize JavaScript Error objects into plain, JSON-safe objects and back.

604
MIT
Used by 8
43Health
Library npm

hast-util-to-html

Serializes hast syntax trees into WHATWG-compliant HTML strings, with fine-grained control over escaping, quoting, and tag omission.

118
MIT
Used by 8
94Health
Library npm

gridstack.js

A dependency-free TypeScript library for building draggable, resizable, responsive dashboard grid layouts in the browser.

9,115
MIT
Used by 7
48Health
Library npm

mdast-util-to-markdown

Serializes an mdast syntax tree back into CommonMark-compatible markdown text, with pluggable handlers for custom syntax extensions.

141
MIT
Used by 7
45Health
Library npm

lossless-json

Parse and stringify JSON without losing precision on big numbers

475
MIT
Used by 6
41Health
Library npm

fast-safe-stringify

Fast JSON.stringify drop-in that safely handles circular references

359
MIT
Used by 6
29Health
Library npm

json-stable-stringify

A deterministic version of JSON.stringify() that sorts object keys so identical data always produces identical output.

79
MIT
Used by 5
39Health
Library npm

url-parse

Small, dependency-light URL parser that works identically in Node.js and the browser.

1,034
MIT
Used by 4
33Health
Library npm

url-pattern

A tiny, dependency-free library for matching and generating URL-like string patterns without regex.

587
MIT
Used by 4
43Health
Library npm

remark-html

A remark plugin that compiles markdown syntax trees directly into sanitized HTML strings.

335
MIT
Used by 4
53Health
SDK PyPI

github3.py

A comprehensive, actively developed Python wrapper around GitHub's REST API v3.

1,257
BSD 3
Used by 3
34Health
SDK npm

sns-payload-validator

Verifies AWS SNS message signatures for HTTP/S and Lambda payloads.

13
MIT
Used by 3
49Health
Library PyPI

prisma-client-py

Auto-generated, fully type-safe Python database client built on Prisma's schema and Rust query engine.

2,095
Apache 2.0
Used by 2
39Health
Library npm

react-scroll-sync

Synchronizes scroll position across multiple scrollable panes in React with a simple context-based provider and pane wrapper.

440
MIT
Used by 2
39Health
Library npm

fast-redact

Very fast object redaction that censors sensitive keys before they reach your logs.

337
MIT
Used by 2
44Health
Library npm

object-inspect

Zero-dependency string representations of any JavaScript value, including circular references and DOM elements.

160
MIT
Used by 2

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