Actor Frameworks
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Apache Pekko is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on May 1, 2026
Apache Pekko is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on May 1, 2026
Simple Actor
Last Release on Oct 8, 2021
High-performance, purely-functional library for building and supervising typed actors backed by ZIO
Last Release on Oct 1, 2022
The Groovy and Java high-level concurrency library offering actors, dataflow, CSP, agents, parallel collections, fork/join and more
Last Release on May 9, 2014
An experimental module which provides an implementation of an actor-based framework.
Last Release on May 8, 2016
akka-actor
Last Release on Sep 29, 2014

Relocated → com.typesafe.akka » akka-actor
In-process Asynchronous Message System in Java for Event Bus/Actor Model (like Kilim, µJavaActors, Akka,... but very simplified)
Last Release on Mar 8, 2022
An experimental module which provides an implementation of an actor-based framework.
Last Release on Sep 20, 2012

Actor library for Java to support concurrency and asynchronous event-driven programming.
Last Release on Aug 28, 2015