TortoiseSVN - The coolest interface to (Sub)version control
TidyTabs - TidyTabs brings tabbed browsing to all of your desktop applications.
SnailSVN - Similar to Tortoise SVN for Windows but integrated into Finder
groupy - Groupy enables you to drag and drop application windows together to group them together under a common tabbed interface.
Xversion - Super easy enterprise class version control.
QTTabBar - QTTabBar is an extension for Windows Explorer that brings tabbed browsing to Microsoft's file...