Akka uses Git and is hosted at Github.
- Akka: clone the Akka repository from http://github.com/akka/akka
The Akka Maven repository can be found at http://akka.io/releases/.
Typesafe provides http://repo.typesafe.com/typesafe/releases/ that proxies several other repositories, including akka.io. It is convenient to use the Typesafe repository, since it includes all external dependencies of Akka. It is a "best-effort" service, and if it is unavailable you may need to use the underlying repositories directly.
For timestamped versions, pick a timestamp from http://repo.typesafe.com/typesafe/snapshots/com/typesafe/akka/akka-actor/. All Akka modules that belong to the same build have the same timestamp.
Make sure that you add the repository to the sbt resolvers or maven repositories:
resolvers += "Typesafe Snapshots" at "http://repo.typesafe.com/typesafe/snapshots/"
Define the library dependencies with the timestamp as version. For example:
libraryDependencies += "com.typesafe.akka" % "akka-actor" % "2.0-20111215-000549" libraryDependencies += "com.typesafe.akka" % "akka-remote" % "2.0-20111215-000549"