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1.Kotlinx Coroutines Core17,269 usages

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

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

2.Kotlinx Coroutines Core15,828 usages

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

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

3.Kotlinx Coroutines Android7,151 usages

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

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

4.Awaitility4,987 usages

org.awaitility » awaitility Apache

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

5.RxJava1,151 usages

io.reactivex.rxjava3 » rxjava Apache

Reactive Extensions for Java
Last Release on Sep 24, 2025

6.Apache Hadoop Common3,466 usages

org.apache.hadoop » hadoop-common Apache

Apache Hadoop Common
Last Release on Mar 24, 2026

7.AtomicFU2,877 usages

org.jetbrains.kotlinx » atomicfu Apache

The idiomatic way to use atomic operations in Kotlin.
Last Release on May 30, 2026

8.Spark Core2,879 usages

org.apache.spark » spark-core Apache

Core libraries for Apache Spark, a unified analytics engine for large-scale data processing.
Last Release on Oct 28, 2026

9.Non Blocking Reactive Foundation For The JVM2,755 usages

io.projectreactor » reactor-core Apache

Non-Blocking Reactive Foundation for the JVM
Last Release on Oct 23, 2026

10.Vert.x Core2,112 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 Oct 22, 2026