InfoQ: Erlang and Ruby Roundup: Vertebra, Scaling with Fuzed, Github

The security/discovery mechanism, the state machine workflow system and the distributed key-value storage system are all written in Erlang. The agent framework for writing agents is all ruby though and the actual functionality of the agents is ruby. The system is also built around the Erlang-based ejabberd which implements messaging using XMPP. Another messaging system written in Erlang is RabbitMQ, which implements AMQP, an Internet Protocol for Business Messaging The search engine Powerset (Microsoft rec...

http://www.infoq.com/news/2008/07/erlang-ruby-roundup

ErlangとRubyを組み合わせたシステムが増えている．Cloud PlatformのVertebra, MSに買収されたPowerset, Githubなど．

http://b.hatena.ne.jp/entry/http://www.infoq.com/news/2008/07/erlang-ruby-roundup