嗯。我正在使用BERT-RPC并且很高兴。

http://github.com/mojombo/bertrpc

What is the most awesome gem I should use to call Erlang functions from Ruby app? I wish to use rspec for testing some gen_server stuff.

Erlectricity looking solid, but there is no something like Node#rpc, just message passing. Any ideas?

Well. I am using BERT-RPC and happy with it.

http://github.com/mojombo/bertrpc