Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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TanStack Query
Hooks-based async state management for fetching, caching, and syncing server data in React.
Tokio
The async runtime powering most of Rust's networked, concurrent, and I/O-bound applications.
FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
futures
The foundational Future, Stream, and Sink traits and combinators for zero-cost async Rust
TanStack Router
A fully type-safe React router with built-in data loading, caching, and URL search-param validation.
tracing
Structured, application-level diagnostics for async Rust programs, built around scoped spans and events.
p-limit
A tiny, battle-tested utility for running async functions with a strict concurrency limit.
async-trait
Type erasure for async fn in Rust traits, enabling async methods behind dyn dispatch.
aiohttp
Asynchronous HTTP client and server framework for Python's asyncio, covering both API calls and building web/WebSocket services.
async-mutex
Mutex and semaphore primitives for synchronizing async workflows in JavaScript and TypeScript.
async
Higher-order async utility functions for callback, async/await, and promise-based control flow in Node.js and the browser.
Tower
Modular, reusable Rust components for building async network clients and servers
p-queue
Promise queue with concurrency control, interval-based rate limiting, and priority scheduling for async tasks.
Starlette
A lightweight ASGI framework/toolkit for building async web services and apps in Python
SQLx
Async, pure-Rust SQL toolkit with compile-time checked queries and no DSL