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