Capture2text - Capture2Text enables users to quickly OCR a portion of the screen using a keyboard shortcut.
Full Page Screen Capture - I built a Chrome Extension that allows you to save a screenshot of an entire webpage as an image
TextSniper - Instantly extract any text from your Mac's screen
Webshot - Free and Open Source screenshot website service
dpScreenOCR - Program to recognize text on screen
Screenshot Designer - Create engaging App Store screenshots