Convert celsius degrees to kelvin degrees with ease.
Get the gravatar.com globally recognized avatar for any email.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Make sure your passwords are good enough.
Get details of any file type, such as the mime type or last edit date.
Check if the URL is cached or not by Google.
Get the web-host of a given website.