Get approximate IP details.
Get all possible details about an SSL certificate.
Get all possible details about a domain name.
Ping a website, server or port..
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Validate JSON content and make it looks good.
Convert text to binary and the other way for any string input.
Get all the HTTP headers that an URL returns for a typical GET request.