Topics / #asynchronous

Asynchronous projects on GitHub

Async runtimes and event-driven concurrency libraries.

As of , the most-starred Asynchronous projects on GitHub are tokio (33.4K stars), libuv (27.3K stars) and EventBus (24.7K stars). GitHub.Locker tracks 19 Asynchronous repositories with 325.5K stars combined. The fastest-growing on October 16 was nmap, with +15 stars in a day.

19Projects
325.5KStars in total
+47Stars in a day
Browse in the catalog →github.com/topics/asynchronous ↗

Hot right now

Most stars gained in a day · Oct 16

+15

nmap

nmap/nmap · ★ 13.8K

Nmap is the Network Mapper — a free, open-source tool for network discovery and security scanning. It finds live hosts, open ports, and the services running on them, from a single machine up to whole subnets.

+14

tokio

tokio-rs/tokio · ★ 33.4K

Tokio is a runtime for writing reliable, asynchronous applications with Rust: it supplies the scheduling, non-blocking I/O, networking and timers that async Rust programs need.

+5

libuv

libuv/libuv · ★ 27.3K

libuv is a multi-platform C support library focused on asynchronous I/O. It was originally built for Node.js and is also used by Luvit, Julia and uvloop.

+5

asynq

hibiken/asynq · ★ 13.8K

Asynq is a Go library for queueing tasks and processing them asynchronously with workers, backed by Redis. It distributes work across multiple machines and is designed to be scalable yet easy to get started.

The all-time top

19 projects · by stars

  1. #1 · tokio-rs/tokio

    tokio

    Tokio is a runtime for writing reliable, asynchronous applications with Rust: it supplies the scheduling, non-blocking I/O, networking and timers that async Rust programs need.

    33.4K
  2. #2 · libuv/libuv

    libuv

    libuv is a multi-platform C support library focused on asynchronous I/O. It was originally built for Node.js and is also used by Luvit, Julia and uvloop.

    27.3K
  3. #3 · greenrobot/EventBus

    EventBus

    EventBus is a publish/subscribe event bus for Android and Java. It simplifies communication between components — Activities, Fragments, Threads, Services — and decouples event senders from receivers.

    24.7K
  1. 4

    RxSwift

    24.6KReactiveX/RxSwift · Swift

    RxSwift is the Swift-specific implementation of the Reactive Extensions standard — a reactive programming library where async operations, KVO and UI events become Observable sequences you can compose and transform.

  2. 5

    redisson

    24.4Kredisson/redisson · Java

    A Java client and real-time data platform for Redis and Valkey: 50+ distributed Java objects, collections and services — maps, queues, locks, rate limiters, bloom filters, schedulers — beyond what Redis offers natively.

  3. 6

    tornado

    22.2Ktornadoweb/tornado · Python

    Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. Thanks to non-blocking network I/O it can scale to tens of thousands of open connections.

  4. 7

    RxJS

    19.3KReactive-Extensions/RxJS · JavaScript

    RxJS (Reactive Extensions for JavaScript) is a set of libraries for composing asynchronous and event-based programs using observable sequences and fluent, Array#extras-style query operators.

  5. 8

    disruptor

    18.5KLMAX-Exchange/disruptor · Java

    LMAX Disruptor is a Java library for high-performance messaging between threads inside a single application — very fast in-process event passing.

  6. 9

    anko

    15.8KKotlin/anko · Kotlin

    Anko is a Kotlin library that makes Android application development faster and easier: it keeps your code clean and readable and hides the rough edges of the Android SDK designed for Java.

  7. 10

    ktor

    14.5Kktorio/ktor · Kotlin

    Ktor is an asynchronous framework for creating microservices, web applications and more, written in Kotlin from the ground up.

  8. 11

    nmap

    13.8Knmap/nmap · C

    Nmap is the Network Mapper — a free, open-source tool for network discovery and security scanning. It finds live hosts, open ports, and the services running on them, from a single machine up to whole subnets.

  9. 12

    asynq

    13.8Khibiken/asynq · Go

    Asynq is a Go library for queueing tasks and processing them asynchronously with workers, backed by Redis. It distributes work across multiple machines and is designed to be scalable yet easy to get started.

  10. 13

    sidekiq

    13.6Ksidekiq/sidekiq · Ruby

    Sidekiq is a background job system for Ruby: it runs slow work like emails or uploads out-of-band, using threads to handle many jobs at the same time in the same process.

  11. 14

    CocoaAsyncSocket

    12.4Krobbiehanson/CocoaAsyncSocket · Objective-C

    CocoaAsyncSocket is an asynchronous socket networking library for macOS, iOS, and tvOS, providing TCP and UDP classes built on Grand Central Dispatch.

  12. 15

    taskflow

    12.2Ktaskflow/taskflow · C++

    Taskflow is a C++ library that helps you write high-performance task-parallel programs with high programming productivity, letting you build and run graphs of dependent tasks across CPU threads and GPUs.

  13. 16

    libevent

    12Klibevent/libevent · C

    Libevent is a C library that provides an asynchronous event notification API, so programs can react to file descriptor readiness, timers, and signals without writing their own platform-specific event loop.

  14. 17

    workerman

    11.5Kwalkor/workerman · PHP

    Workerman is an asynchronous event-driven PHP framework for building fast, scalable network applications, with built-in support for HTTP, WebSocket, TCP, and custom protocols.

  15. 18

    gnet

    11.2Kpanjf2000/gnet · Go

    gnet is a high-performance, lightweight, non-blocking, event-driven networking framework written in pure Go, built on epoll and kqueue to work at the transport layer with TCP, UDP, and Unix Domain Socket.

  16. 19

    spec-ptc

    223alexzhang13/spec-ptc · Python

    sPTC (speculative programmatic tool-calling) is a technique and small library that speculates and queues tool calls hidden inside a partially-generated REPL code block, so harnesses like RLM or CodeAct can start expensive sub-LLM/tool calls before the model even finishes writing the code.

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