Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
Image Hunter - Image Hunter – Search By Image is a tool that allows you to upload an image or images directly from your mobile device and find all the other existing sources of the image on Google.
Angry IP Scanner - Open-source and cross-platform network scanner designed to be fast and simple to use
JS Image Finder - JS Image Finder: Image Search is a powerful, simple, and easy to use application that allows you to search for images from the internet using popular search engines.
Advanced IP Scanner - Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off. Download it Free.
PicFinder - PicFinder – Image Search developed and published by SoftDX.