TinEye - Reverse Image Search to help find an image's source, duplicates or altered versions.
Extensity - Quickly enable/disable Google Chrome extensions.
GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.
Extensions switcher - Menu for quick extensions control
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.
Mozilla Add-ons - Download Firefox extensions and themes. They’re like apps for your browser. They can block annoying ads, protect passwords, change browser appearance, and more.