DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
Capture2text - Capture2Text enables users to quickly OCR a portion of the screen using a keyboard shortcut.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
TextSniper - Instantly extract any text from your Mac's screen
Mizage Divvy - Divvy is an entirely new way of managing your workspace.
dpScreenOCR - Program to recognize text on screen