Concurrency GitHub Repositories (2026) · Open Source Tools

Virtual-thread based safe concurrency & streaming

Fast lossless data compression in Go

A modern, fast, lightweight thread pool library based on C++2x

Cone Programming Language

Fast and small Node.js worker_threads and cluster worker pool

A Cloud at the lowest level!

AsyncExtensions aims to mimic Swift Combine operators for async sequences.

Edit images and video with Swift concurrency, powered by Metal.

A high-performance Ractor web server for Ruby 4.0+: Rack 3-based, with a Rust Tokio/Hyper front-end and Ractor-parallel Ruby workers and threaded fallback mode.

C++20 concurrency framework with no compromises. Excellent performance, powerful features, and simple syntax.

Implementation of blocking (IO-Bound) cancellable java.util.concurrent.CompletionStage and related extensions to java.util.concurrent.ExecutorService-s

Modern C++ actor framework based on std::execution, only requires C++20 - Turns your class into async service.

A Simplest in-memory and Distributed Storage-Agnostic Message Queue for Your Concurrent Go Program

Minimal type-safe context propagation container

A high-performance distributed in-memory object cache system built from scratch in C++17, compatible with Redis protocol.

An interactive platform demonstrating advanced Web Worker patterns and architectural strategies.

A simple Pokedex app written in SwiftUI that implements the PokeAPI, using Swift Concurrency, MVVM architecture and pagination

A ZX Spectrum Emulator written in Go

Sample code and materials for the Swift Concurrency Course by Antoine van der Lee — SwiftLee Courses

A comprehensive Go handbook for software engineers covering fundamentals, idiomatic Go, concurrency, generics, testing, APIs, databases, performance, microservices, system design, and production engineering.