Tesseract - Tesseract is an optical character recognition engine for various operating systems
Writebox - Writebox is a simple and distraction-free text editor for Chrome and iPhone/iPad.
Onlineocr.net - Free Online OCR service allows you to convert PDF document to MS Word file, scanned images to editable text formats and extract text from JPEG/TIFF/BMP files
Calmly Writer - Distraction-free text editor for Mac, Windows, Linux and ChromeOS.
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!
Stashany - Online notepad for developers