title: Easiest way to signal an event to several processes in .NET
body: <p>I was hoping there was an easy way to signal an event to several processes that did not involve me writing a custom socket listener. I'm trying to inform several applications that will need to update their cached configuration settings that a config change has occurred. I wanted to implement a "host wide" singleton, but have failed to find any examples. Is such a thing even possible?</p>