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    <ul> <li><p><strong>scala.actors</strong> was the first serious attempt to implement Erlang-style concurrency in Scala that has inspired other library designers for making a better (in some cases) and more performant implementations. The biggest problem (at least for me), is that unlike Erlang processes, complemented with <strong>OTP</strong> (that allows for building fault-tolerant systems), <strong>scala.actors</strong> only offer a good foundation, a set of stable primitives that must be used for building a more high-level frameworks - at the end of the day, you’ll have to write your own supervisors, catalogs of actors, finite state machines, etc. on top of actors. </p></li> <li><p>And here <strong>Akka</strong> comes to the rescue, offering a full-featured stack for actor-based development: more idiomatic actors, set of high-level abstractions for coordination (load balancers, actor pools, etc.) and building fault-tolerant systems (supervisors, ported from <strong>OTP</strong>, etc.), easily configurable schedulers (dispatchers), and so on. Sorry, if I sound rude, but I think, there will be no merge in <em>2.9.0+</em> - I’d rather expect <strong>Akka</strong> actors to gradually replace stdlib implementation.</p></li> <li><p><strong>Scalaz</strong>. Normally I have this library in the list of dependencies of all my projects, and when, for some reason, I can’t use <strong>Akka</strong>, non-blocking <strong>Scalaz Promises</strong> (with all the goodness, like <code>sequence</code>) combined with the standard actors are saving the day. I never used <strong>Scalaz</strong> actors as a replacement for <strong>scala.actors</strong> or <strong>Akka</strong>, however.</p></li> </ul>
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    1. POHow are the multiple Actors implementation in Scala different?
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    1. USVasil Remeniuk
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