SHODAN lets you find servers/ routers/ etc. by using the simple search bar up above. Most of the data in the index covers web servers at the moment, but there is some data on FTP, Telnet and SSH services as well.
Follow SHODAN on Twitter and get notified when the index gets updated and new services or features get added.
SHODAN website http://shodan.surtri.com
Check also SHODAN Add-ons for Firefox https://addons.mozilla.org/en-US/firefox/addon/51503/
btw;I have added the link on our homepage for better and fast work :)