Crypton

There are two versions of the program, one for PC, the other for PDA. Both versions use the same encryption algorithm, so it is possible to write notes on the PDA and then read them on the PC and vice versa.

Neither version needs installation. Just unzip to a directory or flash drive and run. They need .NET Framework 2 or .NET Compact Framework 2 to run. These can be downloaded for free from Microsoft's website.

It is possible to change the language of the program. Just download the Crypton language pack, unzip it and save the xml files in the directory where the actual program is stored. The files are the same for both versions.

Uses SHA1, AES 256 bit encryption.