ABBYY FineReader - ABBYY's latest PDF editor software, FineReader 16 you can easily convert files like PDF to Excel, PDF to Word, edit, share, collaborate & more with this PDF editor!
Capture2text - Capture2Text enables users to quickly OCR a portion of the screen using a keyboard shortcut.
Tesseract - Tesseract is an optical character recognition engine for various operating systems
dpScreenOCR - Program to recognize text on screen
PDF OCR X - PDF OCR X is a simple drag-and-drop utility for Mac OS X and Windows that converts your PDFs and photos into textual content files or editable PDF documents.
TextSniper - Instantly extract any text from your Mac's screen