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 May 1, 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 May 1, 2026
Castor is a lightweight, typed Actor library for Scala and Scala.js
Last Release on Apr 10, 2026
Simple Actor
Last Release on Oct 8, 2021
a light weight, efficient actor lib
Last Release on Oct 4, 2023
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
Deprecated Actors Library for Scala
Last Release on Nov 3, 2017