title: Python/Erlang: What's the difference between Twisted, Stackless, Greenlet, Eventlet, Coroutines? Are they similar to Erlang processes?
body: <p>My incomplete understanding is that Twisted, Stackless, Greenlet, Eventlet, Coroutines all make use of async network IO and userland threads that are very lightweight and quick to switch. But I'm not sure what are the differences between them.</p>
  
  <p>Also they sound very similar to Erlang processes. Are they pretty much the same thing?</p>
  
  <p>Anyone who could help me understand this topic more would be greatly appreciated.</p>