Paranot.es is a web application that allow user to manage their notes in a "safe" way, By safe, I mean that the notes are encrypted on the client side, so the decrypted version never transit on the network The encryption method used for notes is AES(http://en.wikipedia.org/wiki/Advanced_Encryption_Standard), and the key is the user password. This password does not transit directly on the network either, instead, a hash of the login and the password is used for user authentication.
This is the lib used for encryption: https://code.google.com/p/crypto-js/
You can see it live at http://paranot.es
To install: you need nodejs, npm and the redis server to run the application.
once it's install , simply use
node app.js
and open your browser on "localhost"