From the hall of promising Ruby libraries: an FFI binding to Lua, Ruby to Lua, a neat framework for building Twitter bots, TwiBot and some sugar over the Cascading library (which is sugar over Hadoop) for processing large data sets, cascading.jruby
From the hall of promising Ruby libraries: an FFI binding to Lua, Ruby to Lua, a neat framework for building Twitter bots, TwiBot and some sugar over the Cascading library (which is sugar over Hadoop) for processing large data sets, cascading.jruby