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A book series (2 published editions) on the JS language.

FastAPI framework, high performance, easy to learn, fast to code, ready for production

Async utilities for node and the browser

Blazing 💥 fast terminal-ui for git written in rust 🦀

Node.js test runner that lets you develop with confidence 🚀

Asynchronous HTTP client/server framework for asyncio and Python

The little ASGI framework that shines. 🌟

Ultra fast asyncio event loop.

Simple job queues for Python

🚴 Call stack profiler for Python. Shows you why your code is slow!

Robyn is a Super Fast Async Python Web Framework with a Rust runtime.

Trio – a friendly Python library for async concurrency and I/O

Event-driven networking engine written in Python.

OpenClaw-RL: Train any agent simply by talking

Familiar asyncio ORM for python, built with relations in mind

libxev is a cross-platform, high-performance event loop that provides abstractions for non-blocking IO, timers, events, and more and works on Linux (io_uring or epoll), macOS (kqueue), and Wasm + WASI. Available as both a Zig and C API.

Asynchronous Python ODM for MongoDB

Ultra fast and low latency asynchronous socket server & client C++ library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution

Zero-boilerplate REST API framework for PHP 8+. Auto-generates routes, docs, validation.

Hooks for fetching, caching and updating asynchronous data in Vue

render_async lets you include pages asynchronously with AJAX

👨‍💻👩‍💻 Write Markdown. Together.

🔧 High-performance Python rate limiting library with multiple algorithms (Fixed Window, Sliding Window, Token Bucket, Leaky Bucket & GCRA) and storage backends (Redis, In-Memory).

Background task queue for Python backed by Redis, a super minimal Celery

Signals for Python - Reactive Declarative State Management Library for Python - automatic dependency tracking and reactive updates for your application state. Inspired by Angular Signals / SolidJS.

Type-driven dependency injection for Python. Fail-fast validation, lifetimes, native integrations for FastAPI, Flask, Django, and more.

40K, small memory footprint, single binary that run list of commands in parallel and waits for their termination

Async I/O for Zig

Comprehensive MCP server providing real-time framework documentation access for Claude Code with intelligent caching, multi-source integration, and context-aware assistance.

<UNMAINTAINED> Hunch provides functions like: All, First, Retry, Waterfall etc., that makes asynchronous flow control more intuitive.