TinEye is a reverse image search engine. You can submit an image to TinEye to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions. TinEye is the first image search engine on the web to use image identification technology rather than keywords, metadata or watermarks.

Bonjour is a service discovery protocol. Bonjour allows software to discover services like a file share or website, a chat session in an instant messenger or a device like a printer. Bonjour is limited to registering and discovering services on a local network. Wide Area Bonjour extends Bonjour beyond the local network to the internet.