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

86Health
Framework npm

Express

The fast, unopinionated, minimalist web framework for Node.js

69,454
MIT
Used by 158
91Health
Tool PyPI

Uvicorn

A lightning-fast ASGI server for Python, built on uvloop and httptools.

10,963
BSD 3
Used by 81
51Health
Library npm

cors

Node.js CORS middleware for Express and Connect that sets standards-compliant headers to control cross-origin browser access.

6,194
MIT
Used by 79
90Health
Framework PyPI

FastAPI

A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.

102,333
MIT
Used by 76
90Health
Framework npm

Hono

A small, ultrafast web framework built on Web Standards that runs identically everywhere.

32,186
MIT
Used by 60
51Health
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
87Health
Library npm

Multer

Streamlined multipart/form-data file upload handling for Express and Node.js APIs.

12,085
MIT
Used by 44
95Health
Framework PyPI

aiohttp

Asynchronous HTTP client and server framework for Python's asyncio, covering both API calls and building web/WebSocket services.

16,548
Apache 2.0
Used by 40
82Health
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.

676
MIT
Used by 37
84Health
Library npm

body-parser

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

5,499
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.

40,607
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
89Health
Library npm

@hono/zod-validator

Type-safe request validation middleware for Hono, powered by Zod schemas.

992
MIT
Used by 34
90Health
Tool PyPI

Gunicorn

A fast, lightweight pre-fork WSGI and ASGI HTTP server for running Python web apps in production on UNIX.

10,669
MIT
Used by 33
72Health
Library npm

compression

Node.js middleware that transparently gzip-, deflate-, or Brotli-compresses HTTP responses for Express and raw http servers.

2,806
MIT
Used by 33
92Health
Framework Cargo

axum

Ergonomic and modular HTTP routing and request-handling framework for Rust, built on Tokio, Hyper, and Tower.

27,128
MIT
Used by 28
93Health
Framework npm

NestJS

A progressive Node.js framework for building efficient, scalable, and maintainable server-side applications in TypeScript.

76,663
MIT
Used by 27
91Health
Framework npm

Fastify

A fast and low-overhead web framework for Node.js, built around schema-based validation and a plugin architecture

37,137
MIT
Used by 25
55Health
Library Cargo

Tower

Modular, reusable Rust components for building async network clients and servers

4,294
MIT
Used by 23
71Health
Framework Go

Gin

A high-performance HTTP web framework for Go, built on a zero-allocation radix-tree router with an Express.js-style API.

89,216
MIT
Used by 22
81Health
Library Go

chi

A lightweight, idiomatic Go HTTP router built entirely on net/http, for composing middleware and mounting REST APIs without a framework.

22,827
MIT
Used by 22
98Health
Framework Composer

Laravel

The expressive, elegant PHP framework for building modern web applications

34,910
MIT
Used by 21
93Health
Library Cargo

hyper

A fast, low-level HTTP client and server library for Rust supporting HTTP/1 and HTTP/2

16,316
MIT
Used by 21
93Health
Framework PyPI

Starlette

A lightweight ASGI framework/toolkit for building async web services and apps in Python

12,618
BSD 3
Used by 21

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