Easily convert hours to seconds.
Easily convert hours to days.
Easily convert hours to weeks.
Easily convert hours to months.
Easily convert hours 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.
Take an IP and try to look for the domain/host associated with it.
Make sure your passwords are good enough.
Get all possible details about an SSL certificate.