Apache Mesos
Apache Mesos is a cloud computing project built in C++ that provides distributed resource management and scheduling. The repository contains libprocess, a concurrent and asynchronous programming library inspired by Erlang that implements general primitives for asynchronous programming including futures/promises, HTTP abstractions, and an actor model (where actors are called "processes"). Libprocess enables developers to write non-blocking, highly concurrent software through composition of asynchronous operations and supports inter-process communication via HTTP requests and message passing.