Rares's Gems

#	Total Rank	Daily Rank	Name	Summary
1	12,774	19,150	option	Ruby port of Scala's Option Monad
2	41,224	89,467	acts_as_filterable	Filter attributes and stuff.
3	81,311	70,052	queued	Call any ActiveRecord instance method as though it was a Resque job
4	94,838	121,623	rack_upstream_identification	Middleware that injects upstream server info into the response