You can run an actor system in Javascript of course and there are partial ports of Akka available, but are not meant for production use. I wouldn't use Akka in

You can run an actor system in Javascript of course and there are partial ports of Akka available, but are not meant for production use. I wouldn't use Akka in the browser though, as it's too heavy and I feel that the kind of tasks meant for Akka do not happen in the browser, though for Node.js that would be another story.