Easily convert months to seconds.
Easily convert months to minutes.
Easily convert months to hours.
Easily convert months to weeks.
Easily convert months to years.
Get the gravatar.com globally recognized avatar for any email.
Check if the URL is cached or not by Google.
Take an IP and try to look for the domain/host associated with it.
Get all possible details about an SSL certificate.
Get & verify the meta tags of any website.
Make sure your passwords are good enough.