Easily convert days to seconds.
Easily convert days to minutes.
Easily convert days to weeks.
Easily convert days to months.
Easily convert days to years.
Get the gravatar.com globally recognized avatar for any email.
Ping a website, server or port..
Get all possible details about a domain name.
Make sure your passwords are good enough.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Take an IP and try to look for the domain/host associated with it.