CryptIM is a messaging application for Windows. It provides easy encryption for your conversations All you have to do is type and hit SEND. CryptIM uses 3 different algorithms (one of which is Rijndael - The Advanced Encryption Standard) to provide well for the privacy of your communication. As of now (Version 1.0) it is only possible to communicate with one other person.But, many more features will be implemented in the future. CryptIM is free for private noncommercial use.