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!
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Tesseract - Tesseract is an optical character recognition engine for various operating systems
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.