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

Thum.io - A real-time website screenshot generator

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

Microlink screenshot - Take a screenshot of any website

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.

Full Page Screen Capture - I built a Chrome Extension that allows you to save a screenshot of an entire webpage as an image