Check out what screenocr has contributed to FileCart
Converts anything you can read on the screen into editable text, with astonishing accuracy. A web page, an image, a scanned page or even a PDF file, Screen OCR recognizes the letters and copies them to the clipboard.
Screen OCR SDK Library is a programmer's OCR library which is ready to integrate into their software projects. It adds the functionality of text capture from any source displayed on the screen.