Xnapper - Take beautiful screenshots instantly

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

Pika.style - A free tool to quickly convert screenshots into beautiful website and device mockups. You can create customizable images for App Store, Instagram, and more

Adobe Scan - Scan anything into a PDF using your mobile device.

Screely - Screely instantly generates dribbble-ready images. Simply upload your screenshot and we'll do the rest.

Tesseract - Tesseract is an optical character recognition engine for various operating systems