TinEye - Reverse Image Search to help find an image's source, duplicates or altered versions.

Capture2text - Capture2Text enables users to quickly OCR a portion of the screen using a keyboard shortcut.

GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.

dpScreenOCR - Program to recognize text on screen

Microsoft Lens - Microsoft Lens (formerly known as Office Lens) is an all-in-one application designed for Windows, Android, and Apple devices, allowing you to capture important information from signs, PDFs, whiteboards, and more to add.

Textify - A small tool which allows to copy text from dialogs and controls which don’t allow it otherwise.