Take an IP and try to look for the domain/host associated with it.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get all possible details about an SSL certificate.
Flip, upside down text with ease.
Ping a website, server or port.
Check if the URL is banned and marked as safe/unsafe by Google.
Extract http/https URLs from any kind of text content.
Generate a paypal payment link with ease.