Fivehundred's Gems

#	Total Rank	Daily Rank	Name	Summary
1	48,145	32,840	mail_robber	Simple email testing for Rails
2	91,573	73,007	find_duplicates	adds methods to find duplicate rows to AR models
3	96,187	123,241	acts_as_daterange	adds daterange to AR models
4	116,169	123,241	shabbat	The most Kosher GEM in the web. Extends Date and Time classes to add common jewish meth...