Generate an MD4 hash for any string input.
Generate an MD5 hash of 32 characters length for any string input.
Get the gravatar.com globally recognized avatar for any email.
Make sure your passwords are good enough.
Check if the URL is cached or not by Google.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get the web-host of a given website.
Done