Take an IP and try to look for the domain/host associated with it.
Get approximate IP details.
Get all possible details about an SSL certificate.
Ping a website, server or port..
Use the Google translator API to generate text to speech audio.
Extract email addresses from any kind of text content.
Separate text back and forth by new lines, commas, dots...etc.
Get the size of a text in bytes (B), Kilobytes (KB) or Megabytes (MB).
Easily convert IDN to Punnycode and back.