Ask HN: What are some good P2P application testing resources?

Can anyone recommend good P2P application testing resources?

By resources I mean: frameworks/libraries/papers/previous research/talks, etc

By P2P I basically mean some peer running a listener/server, and receiving/broadcasting/sending messages accordingly (nothing fancy).

As of today when I want to test a decentralized/P2P app, I'm just using a lot of <code>nc -lk [port number]</code> on my machine, and just opening a bunch of terminals with that (to create the illusion of multiple peers). However, as you might imagine, this is terribly inefficient and cumbersome.

Any suggestions?

Edit: add clarification of resources