Scratch

Just press space to begin! This took a while to make, and I've seen many fail at making this, so I decided to try my own hand at it. It's complete with crucial event handlers like not letting users set their password as their username, making sure usernames and passwords aren't too short or too long, setting passwords to the specific user accounts and letting a user know if they've entered the wrong password for an account, and best of all, you can create as many accounts as you'd like! Tell me what you think in the comments and don't neglect the LOVE IT button! (:

http://scratch.mit.edu/projects/Zparx/2616866