Convert text to binary and the other way for any string input.
Convert text to ascii and the other way for any string input.
Convert text to decimal and the other way for any string input.
Convert text to octal and the other way for any string input.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get approximate IP details.
Make sure your passwords are good enough.
Ping a website, server or port..
Use the Google translator API to generate text to speech audio.
Easily convert IDN to Punnycode and back.