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

96Health
Framework npm

Next.js

The React framework for production: file-based routing, server rendering, and Rust-powered builds.

142,310
MIT
Used by 154
95Health
SDK npm

Sentry JavaScript (@sentry/browser)

The official Sentry SDK for capturing errors, performance traces, and session replays in browser JavaScript apps.

8,742
MIT
Used by 110
92Health
Library npm

AI SDK

Provider-agnostic TypeScript toolkit for building AI apps and agents with any LLM.

26,733
Apache 2.0
Used by 105
45Health
Library npm

next-themes

Perfect dark mode for React and Next.js apps in two lines of code, with zero flash on load.

6,338
MIT
Used by 97
89Health
Library npm

jose

Zero-dependency JWT, JWS, JWE, and JWK toolkit for Node.js, browsers, and edge runtimes.

7,792
MIT
Used by 66
90Health
Library npm

Prisma Client

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

47,610
Apache 2.0
Used by 46
86Health
Library npm

SWR

React Hooks for data fetching with built-in caching, revalidation, and real-time updates

32,477
MIT
Used by 43
89Health
Framework npm

Better Auth

The most comprehensive, framework-agnostic authentication and authorization framework for TypeScript.

29,933
MIT
Used by 37
90Health
Framework npm

tRPC Server

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

40,607
MIT
Used by 35
90Health
Library npm

Fumadocs Core

The headless React library for building documentation websites, with source loading, page trees, MDX processing, search, and i18n.

13,134
MIT
Used by 28
61Health
Library npm

usehooks-ts

A tree-shakable collection of 30+ ready-to-use React hooks, written in TypeScript.

7,857
MIT
Used by 27
73Health
Library npm

NextAuth.js

Open-source authentication for Next.js with OAuth, OIDC, email, and passkey sign-in.

28,365
Other
Used by 26
91Health
Library npm

nuqs

Type-safe search params state manager for React — like useState, but stored in the URL query string.

10,834
MIT
Used by 26
89Health
Tool npm

shadcn

Add beautifully designed, accessible UI components as owned source code via a CLI

123,770
MIT
Used by 24
92Health
Library npm

openid-client

Certified OAuth 2 and OpenID Connect client for every modern JavaScript runtime.

2,410
MIT
Used by 24
91Health
Library npm

@mantine/core

A fully featured React components library with 100+ accessible, themeable UI primitives.

31,709
MIT
Used by 22
84Health
Library npm

http-proxy-middleware

The one-liner Node.js proxy middleware for connect, express, next.js, hono, and more.

11,126
MIT
Used by 20
90Health
Library npm

daisyui

Semantic component classes and built-in themes for Tailwind CSS, so buttons, forms, and modals no longer need a wall of utility classes.

42,373
MIT
Used by 12
89Health
SDK PyPI

E2B

Python SDK for spinning up secure, isolated cloud sandboxes where AI agents can safely run code.

13,798
MIT
Used by 12
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
86Health
Library npm

connect-es

Type-safe RPC clients and servers for TypeScript, built from Protobuf schemas and servable over Connect, gRPC, or gRPC-Web.

1,810
Apache 2.0
Used by 11
88Health
Framework npm

Mastra Core

The TypeScript framework for building AI agents, workflows, and RAG apps with unified access to 40+ LLM providers.

28,036
Apache 2.0
Used by 8
65Health
Framework npm

Nextra

Next.js-powered static site generator for docs, blogs, and content sites

13,921
MIT
Used by 8
92Health
SDK npm

@clerk/backend

The official JavaScript SDK for Clerk's Backend API and JWT session verification.

1,755
MIT
Used by 8

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