HackerTyper is a free web application with simple user interface, Well structured button and easy to use with all the features.
It can be a great way to make fun of your friends who don't know how hacking works and make it look like you're hacking them.
There are two presets in this app: terminal and kernel. With the two of them, you'll be able to change the way the app works in just a few clicks so you don't have to code yourself.