Easily convert years to seconds.
Easily convert years to minutes.
Easily convert years to hours.
Easily convert years to weeks.
Easily convert years to months.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get all possible details about a domain name.
Extract email addresses from any kind of text content.
Get all possible details about an SSL certificate.
Take an IP and try to look for the domain/host associated with it.
Make sure your passwords are good enough.