OwlOCR is described as 'offers simple optical character recognition of text in PDF files, images or on-screen and converts that to plain text. All conversion is done securely on-device - none of your images or files are sent to third-party services in the cloud as most applications do' and is an app in the Office & Productivity category. There are more than 50 alternatives to OwlOCR for a variety of platforms, including Windows, Mac, Online / Web-based, Linux and iPhone. The best alternative is NAPS2, which is both free and Open Source. Other great apps like OwlOCR are Adobe Acrobat DC (Paid), Tesseract (Free, Open Source), ABBYY FineReader PDF (Paid) and GImageReader (Free, Open Source).
ABBYY FineReader PDF is an OCR software that provides unmatched text recognition accuracy and conversion capabilities, virtually eliminating retyping and reformatting of documents. Up to 190 languages are supported for text recognition.
TextSniper is a super useful app to quickly capture unselectable text. Use it to capture and recognize text from presentations, trainings, screencasts,images, pictures, webpages, video tutorials, photos, PDFs etc. Literally from anywhere on your mac's screen.