RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
TortoiseSVN - The coolest interface to (Sub)version control
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
SnailSVN - Similar to Tortoise SVN for Windows but integrated into Finder
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Xversion - Super easy enterprise class version control.