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
Tags2
React667 Python638 Javascript591 Rust485 Typescript408 Hacktoberfest308 PHP304 Nodejs280 Parser224 JSON205 Laravel203 Go192 API175 Javascript7
Sort:Used by Most Apps
Used by Most Apps Health Score Most Stars A-Z
Showing 17 of 5929 packages
Framework Javascript API Clear all
86Health
Framework npm

Express

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

69,454
MIT
Used by 158
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

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
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
92Health
Framework PyPI

django-rest-framework

The most widely-used toolkit for building Web APIs on top of Django, with serializers, viewsets, and a built-in browsable API.

30,179
BSD 3
Used by 15
78Health
Framework npm

grammY

The modern TypeScript framework for building Telegram bots on Node.js and Deno

3,743
MIT
Used by 6
80Health
Framework npm

graphql-yoga

A fully-featured, spec-compliant GraphQL server built on the WHATWG Fetch API, running anywhere from Node to Cloudflare Workers.

8,531
MIT
Used by 4
86Health
Framework Composer

Slim Framework

A lightweight PHP micro framework for building fast web applications and APIs

12,274
MIT
Used by 3
47Health
Framework npm

itty-router

An ultra-tiny (~1kB), zero-dependency TypeScript router built for Cloudflare Workers and other serverless/edge runtimes.

2,047
MIT
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
53Health
Framework PyPI

Flask-RESTX

Flask extension for building fully documented REST APIs with Swagger/OpenAPI out of the box

2,234
BSD 3
Used by 2
92Health
Framework npm

Payload

The Next.js-native, TypeScript CMS and application framework with instant REST, GraphQL, and Local APIs.

44,738
MIT
Used by 1
61Health
Framework npm

TypeGraphQL

Build type-safe GraphQL APIs in TypeScript by defining schema and resolvers with classes and decorators instead of hand-written SDL.

8,091
MIT
Used by 1
84Health
Framework PyPI

aiogram

A modern, fully asynchronous Python framework for building Telegram bots on asyncio and aiohttp.

5,864
MIT
Used by 1
56Health
Framework Cargo

tarpc

An async Rust RPC framework that defines services directly in code via a macro instead of a separate IDL, with pluggable transports and deadline propagation.

3,739
MIT
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
96Health
Framework Composer

api-platform/core

PHP framework for building hypermedia REST and GraphQL APIs from your models

2,574
MIT
Used by 1

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