Take an IP and try to look for the domain/host associated with it.
Ping a website, server or port..
Upload a image and extract the data out of it.
Convert a number to roman numerals with ease.
Convert gallons (US) to liters with ease.
Convert kilograms (kg) to pounds (lb) with ease.
Count the amount of characters and words of a given text.
Easily generate dummy text with the Lorem Ipsum generator.