In this article, I discuss asynchronous event-driven programming and how it's done in Twisted. Because reading about code only gets you so far, I cite examples from a real Twisted application ...

ENet's event-driven programming model makes client session management very simple. The library dispatches an event when a peer connects or disconnects, and when a message is received from a peer.

What’s perhaps most interesting about Drasi’s approach to event-driven computing is its support for what, in the past, would have been many different event management tools.