In the last hour I threw together a basic encryptor... I didn't write the rc4 algorithm or the css, but I put everything else together... It's useful when you want to send encrypted messages to friends- just send them the link the encryptor generates and once they enter the passcode they can see the message!
It's not anything new, just something that I needed for PMing
Here it is if you want to check it out:
https://encrypt.claritymn.com/
(Will be down from the 8th to the 31th of June most likely )

That's very cool- easy to use and self-explanatory. I wish I could write something like that!

Thanks for the kind feedback
It wasn't really that difficult to make, I used Bootswatch and some basic Javascript, plus a public domain arc4 function I found somewhere on the internet.

Not bad, not bad at all. You might want to change that passphrase field to a non-password field though, given that Firefox keeps asking to remember the passphrase even though there's no username field.

I changed it only to make it more secure, since Chrome would watch and offer suggestions. Although I could just use the HTML tag to disable it, I assumed that password fields wouldn't be watched due to their secure nature, and therefore would be more private.