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

Kind1
Library4824 SDK549 Tool342 Framework214
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
Tags4
React667 Python638 Javascript591 Rust485 Typescript408 Hacktoberfest308 PHP304 Nodejs280 Parser224 JSON205 Laravel203 Go192 HTTP189 HTTPS29 Java18 Python3102
Sort:Used by Most Apps
Used by Most Apps Health Score Most Stars A-Z
Showing 19 of 5929 packages
Framework HTTPS Python310 Java HTTP Clear all
86Health
Framework npm

Express

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

69,454
MIT
Used by 158
90Health
Framework npm

Hono

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

32,186
MIT
Used by 60
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
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 PyPI

Starlette

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

12,618
BSD 3
Used by 21
73Health
Framework npm

Koa

Koa is an expressive, minimal Node.js web framework built on async functions for cleaner middleware and better error handling.

35,685
MIT
Used by 13
91Health
Framework Go

Echo

A minimalist, high-performance Go web framework with a radix-tree router, built-in middleware chain, and first-class HTTP/2 support.

32,705
MIT
Used by 13
90Health
Framework Cargo

Actix Web

A powerful, pragmatic, and extremely fast web framework for Rust

24,826
Other
Used by 9
85Health
Framework npm

Capacitor

Build native iOS, Android, and Progressive Web Apps from a single web codebase

16,662
MIT
Used by 7
87Health
Framework PyPI

PySpark

Python API for Apache Spark, the unified engine for large-scale distributed data processing

43,997
Apache 2.0
Used by 4
92Health
Framework Cargo

Thrift

Cross-language RPC framework with a Rust crate for interoperable clients and servers.

10,959
Apache 2.0
Used by 3
68Health
Framework npm

hapi

A config-driven Node.js framework for building HTTP APIs and web servers with built-in validation, caching, and auth.

14,792
BSD 3
Used by 2
94Health
Framework PyPI

Apache Beam

A unified programming model for defining batch and streaming data-parallel pipelines

8,662
Apache 2.0
Used by 2
84Health
Framework npm

InversifyJS

A lightweight, decorator-driven IoC container that brings SOLID-friendly dependency injection to TypeScript and JavaScript apps.

289
MIT
Used by 2
59Health
Framework Cargo

warp

A composable, filter-based web server framework for Rust built on hyper and Tokio.

10,367
MIT
Used by 1
91Health
Framework PyPI

Twisted

A mature, event-driven networking engine for Python built around the reactor pattern, with async HTTP, SSH, DNS, IMAP, and IRC protocols built in.

5,979
MIT
Used by 1
67Health
Framework Cargo

Extism

The framework for building with WebAssembly: load, run, and extend apps with wasm plugins.

5,758
BSD 3
Used by 1
86Health
Framework npm

tinyhttp

A tiny, ESM-only web framework that's an Express-compatible drop-in, with precompiled routing and a fraction of the dependencies.

2,902
MIT
Used by 1
80Health
Framework Composer

Mezzio

A minimalist PSR-7/PSR-15 middleware microframework for building PHP web applications and APIs.

396
BSD 3
Used by 1

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