Eurybia allows you to store any notes online. Entirely secure by using browser based encryption. We do not store your password on the server. Not even a hash of the password. We do not even store your username on the server, only the hash of it. Noone who would listen to your internet connection can read any of your data, no matter if you are at work, in an internet cafe or using a free WIFI, where a proxy server may log what you do. Your data is decrypted directly in your browser only.
Choose your username and a strong password and you are ready to go. We don't need anything else. Eurybia is entirely free and with browser based AES encryption and SHA256 hasing it is as secure as it can be.