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

50Health
Library npm

cookie-parser

Express middleware that parses HTTP Cookie headers into req.cookies, with support for signed and JSON-encoded cookie values.

2,030
MIT
Used by 52
58Health
Library npm

bcrypt.js

A zero-dependency, pure JavaScript implementation of bcrypt for hashing and verifying passwords in Node.js and the browser.

3,797
BSD 3
Used by 51
86Health
Library PyPI

PyJWT

A Python implementation of RFC 7519 for encoding, decoding, and verifying JSON Web Tokens.

5,706
MIT
Used by 44
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.

5,391
Apache 2.0
Used by 37
54Health
Library npm

cookie

Basic HTTP cookie parser and serializer for HTTP servers, with zero dependencies and full RFC 6265 support.

1,535
MIT
Used by 31
94Health
SDK npm

supabase-js

The official isomorphic JavaScript SDK for Supabase — database, auth, realtime, storage, and edge functions in one client.

4,568
MIT
Used by 28
97Health
SDK npm

@azure/identity

Microsoft Entra ID credential library that authenticates every Azure SDK client, from managed identity in production to CLI and browser login in development.

2,296
MIT
Used by 28
72Health
Library npm

NextAuth.js

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

28,374
Other
Used by 26
71Health
Library npm

express-session

Simple, pluggable session middleware for Express that signs session IDs into a cookie and delegates data storage to any compatible store.

6,354
MIT
Used by 24
90Health
Library npm

openid-client

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

2,421
MIT
Used by 24
75Health
Library PyPI

bcrypt (Python)

A Python library for secure password hashing using the bcrypt algorithm with an adjustable work factor

1,501
Apache 2.0
Used by 16
98Health
SDK PyPI

Azure Identity (Python)

Microsoft Entra ID token authentication for Azure SDK clients in Python

5,609
MIT
Used by 15
46Health
Library PyPI

itsdangerous

A small Python toolkit for cryptographically signing data so you can trust it hasn't been tampered with when it comes back from an untrusted client.

3,135
BSD 3
Used by 15
69Health
Library npm

OTPAuth

HOTP and TOTP one-time password library for Node.js, Deno, Bun, and browsers

1,482
MIT
Used by 15
83Health
Library npm

@nestjs/passport

The official NestJS integration module for the Passport authentication middleware

559
MIT
Used by 15
78Health
Library npm

@nestjs/jwt

Official NestJS module for signing, verifying, and decoding JWTs

688
MIT
Used by 14
84Health
SDK npm

react-turnstile

React bindings for Cloudflare Turnstile — a privacy-first CAPTCHA alternative with a declarative component and a full imperative ref API.

853
MIT
Used by 11
96Health
SDK npm

firebase-js-sdk

Google's official client SDK for building web and Node.js apps on Firebase's backend services.

5,147
Apache 2.0
Used by 9
92Health
SDK npm

@clerk/backend

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

1,759
MIT
Used by 8
67Health
Library PyPI

argon2-cffi

Secure, high-level password hashing for Python using Argon2

731
MIT
Used by 8
79Health
Library npm

node-oauth2-server

Framework-agnostic, RFC 6749/6750-compliant OAuth 2.0 server module for Node.js with native async/await and PKCE support.

447
MIT
Used by 7
80Health
Library PyPI

OAuthLib

Generic, spec-compliant OAuth1, OAuth2, and OpenID Connect implementation for Python

2,982
BSD 3
Used by 6
51Health
SDK npm

React OAuth (Google)

Typed React hooks and components for Google Sign-In, One Tap, and OAuth2 login built on Google's Identity Services SDK.

1,337
MIT
Used by 6
58Health
Library npm

set-cookie-parser

Parse raw Set-Cookie header values into structured JavaScript cookie objects

198
MIT
Used by 6

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