Chars - Unicode Symbols Keyboard for iOS
Tesseract - Tesseract is an optical character recognition engine for various operating systems
Falcon for iOS - Writing notes made simple
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
A5 - Takes notes in your browser. Elegant & simple.
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!