Easily convert seconds to minutes.
Easily convert seconds to days.
Easily convert seconds to weeks.
Easily convert seconds to months.
Easily convert seconds to years.
Easily convert IDN to Punnycode and back.
Extract email addresses from any kind of text content.
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.
Get all possible details about an SSL certificate.