Top ASYNC GitHub Repositories & Tools (2026)

Platform Abstraction C++ Libraries

Feather is a modern Swift-based Content Management System.

AWS SDK with readable code and async responses

AsyncExtensions aims to mimic Swift Combine operators for async sequences.

Rqueue: Job Queue and Scheduler for Spring and Spring Boot (Redis & NATS)

the missing toolbox for an async world

Convenient access to tick-level real-time and historical cryptocurrency market data via Node.js

Automated documentation for event-driven applications built with Spring Boot

A fast configurable port scanner with reasonable defaults

A library for managing concurrent asynchronous operations in .NET. Provides bounded concurrency, priority scheduling and key-based serialization over a single queue, with Task and IObservable APIs.

A data-oriented C# Discord library, focused on high-performance concurrency and robust design.

The Charm++ parallel programming system. Visit https://charmplusplus.org/ for more information.

jinja2 template renderer for aiohttp.web

🐘 Non-blocking, event-driven Swift client for PostgreSQL.

A comprehensive and efficient low-contention thread pool for easily managing both sync and async workloads. It provides granular work control, flexible concurrency, and robust error handling.

Python Client for ESPHome native API. Used by Home Assistant.

Simple Python API wrapper for the RedGIFs API

PHPStreamServer is an event-loop-based application server and process supervisor built entirely in PHP.

Process Multiple Asynchronous Tasks in Various Ways - One at a time / Batched / Rate limited / Concurrently

High-performance networked mutex for Node.js libraries.