Google Lens - Discover information about something by taking a photo
Golden - Mapping all human knowledge
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.
Sutle - Save and organize resources into a directed learning path.
GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.
QuestBook - The fastest way to teach and learn