For current stable release check the documentation page.

Snapshots

Snapshots of the latest development version of Akka docs are available

Documentation: Reference Java API Scala API

Archive

Akka 2.8

Akka 2.8 – part of Akka 23.05

Akka 2.8 was the previous stable version, released on March 16, 2023. Only patched if critical bugs are found.

Documentation: Reference Java API Scala API

Artifacts are available from Maven Central.

Akka 2.7 – part of Akka 22.10

Akka 2.7 was the previous stable version, released on October 19, 2022. Only patched if critical bugs are found.

Documentation: Reference Java API Scala API

Artifacts are available from Maven Central.

Akka 2.6

Akka 2.6 reached end-of-life October 19, 2023, with the last version being 2.6.21

Documentation: Java Manual Java API Scala Manual Scala API

Artifacts are available from Maven Central.

Akka 2.5

Akka 2.5 reached end-of-life 11/6/2020, with the last version being 2.5.32

Documentation: Java Manual Java API Scala Manual Scala API

Artifacts are available from Maven Central.

Akka 2.4

Akka 2.4 reached end-of-life 12/31/2017, with the last version being 2.4.20

Documentation: Java Manual Java API Scala Manual Scala API

Artifacts are available from Maven Central.

Akka 2.3

Akka 2.3 reached end-of-life April, 2017 with the last version being 2.3.16.

Documentation: Java Manual Java API Scala Manual Scala API

Artifacts are available from Maven Central.

Older versions of Akka

Even older release are available from Maven Central for their respective version number.