dotnet/orleans · GitHub
"Orleans is a framework that provides a straight-forward approach to building distributed high-scale computing applications, without the need to learn and apply complex concurrency or other scaling patterns. It was created by Microsoft Research and designed for use in the cloud. Orleans has been used extensively running in Microsoft Azure by several Microsoft product groups, most notably by 343 Industries as a platform for all of Halo 4 cloud services, as well as by a number of other projects and companies."
akkadotnet/akka.net · GitHub
"Akka.NET is a community-driven port of the popular Java/Scala framework Akka to .NET."