Get approximate IP details.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get all possible details about an SSL certificate.
Get all possible details about a domain name.
Ping a website, server or port..
Get the gravatar.com globally recognized avatar for any email.
Make sure your passwords are good enough.
Separate text back and forth by new lines, commas, dots...etc.
Check for 301 & 302 redirects of a specific URL. It will check for up to 10 redirects.