Actor Frameworks
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Akka is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on Aug 15, 2025
Apache Pekko is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on Aug 20, 2026
Akka is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on Aug 15, 2025
Apache Pekko is a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala.
Last Release on Aug 20, 2026
Simple Actor
Last Release on May 17, 2026
Castor is a lightweight, typed Actor library for Scala and Scala.js
Last Release on Apr 10, 2026
a light weight, efficient actor lib
Last Release on Oct 4, 2023
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
Deprecated Actors Library for Scala
Last Release on Nov 3, 2017
Fibers, Channels and Actors for the JVM
Last Release on Nov 2, 2018