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
Category
Utilities Ids Helpers1293
Serialization Data Formats487
UI Component Libraries383
Cli Terminal323
Authentication Authorization289
Cryptography Hashing259
Web Frameworks API Servers246
Build Tools Bundlers227
Image Media Processing213
Cloud Sdks200
Database Drivers Clients200
Async Concurrency Runtimes194
Sort:Used by Most Apps
74Health
Library
npm
helmet
Secure Node and Express apps by setting protective HTTP response headers with a single line of middleware.
10,735
MIT
Used by 32
72Health
Library
npm
@fastify/cors
Official Fastify plugin that adds configurable CORS headers and preflight handling to any Fastify API.
497
MIT
Used by 14
90Health
Library
PyPI
multidict
A fast dict-like multi-value mapping for HTTP headers and URL query strings, with a C-accelerated backend and a pure-Python fallback.
492
Apache 2.0
Used by 7
63Health
Library
npm
set-cookie-parser
Parse raw Set-Cookie header values into structured JavaScript cookie objects
197
MIT
Used by 6
52Health
Library
npm
on-headers
Fire a listener right before a Node.js HTTP response writes its headers.
162
MIT
Used by 5
49Health
Library
Cargo
headers
Strongly-typed HTTP header definitions for Rust, extracted from and used by the hyper HTTP stack.
200
MIT
Used by 1
