jQuery.pidCrypt uses HTML5 localStorage or sessionStorage for implementing an RSA public keyring within the browser, allowing transparent asymmetric encryption of form submissions while protecting the keys with AES symmetric encryption. It is easy to implement and has numerous configurable options for pre, post, and error-handling callbacks.
CF is a Linux/Unix command line utility for editing/managing AES-encrypted text files. Multiple users can edit the same files using their own separate passwords. It supports basic file locking, piping, adding, changing, removing, and listing keys. Editing sessions are as simple as typing "cf secretfile.cf"; CF asks for a password, decrypts the file, and starts an editor of choice. When the sessions ends, CF picks up the clear text and re-encrypts it. It takes care to let the clear files exist for as short periods of time as possible, and wipes them from memory and disk. It can be used for password management for single users or groups. It can also encrypt/decrypt streams when used in a pipe.