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Concurrency Libraries
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1.Kotlinx Coroutines Core12,181 usages

org.jetbrains.kotlinx » kotlinx-coroutines-core Apache

Coroutines support libraries for Kotlin
Last Release on May 9, 2026

2.Kotlinx Coroutines Android5,313 usages

org.jetbrains.kotlinx » kotlinx-coroutines-android Apache

Coroutines support libraries for Kotlin
Last Release on May 9, 2026

3.RxJava1,097 usages

io.reactivex.rxjava3 » rxjava Apache

Reactive Extensions for Java
Last Release on Sep 24, 2025

4.Awaitility4,517 usages

org.awaitility » awaitility Apache

A Java DSL for synchronizing asynchronous operations
Last Release on Feb 21, 2025

5.AtomicFU2,641 usages

org.jetbrains.kotlinx » atomicfu Apache

The idiomatic way to use atomic operations in Kotlin.
Last Release on Mar 24, 2026

6.Non Blocking Reactive Foundation For The JVM2,368 usages

io.projectreactor » reactor-core Apache

Non-Blocking Reactive Foundation for the JVM
Last Release on Apr 14, 2026

7.Vert.x Core1,849 usages

io.vertx » vertx-core Apache +1

The Vert.x core APIs contain the backbone for writing Vert.x applications and low-level support for HTTP, TCP, UDP, file system, asynchronous streams and many other building blocks.
Last Release on May 5, 2026

8.Akka Actor2,232 usages

com.typesafe.akka » akka-actor BUSL

Akka is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on Aug 15, 2025

9.Disruptor Framework1,499 usages

com.lmax » disruptor Apache

Disruptor - Concurrent Programming Framework
Last Release on Sep 29, 2023

10.Java Concurrency Tools Core Library314 usages

org.jctools » jctools-core Apache

Java Concurrency Tools Core Library
Last Release on Feb 25, 2026