A small utility (25 Kb) program written in C#. MyRolodex allows you to pair a key (enter some unique string) with associated string data and save securely to file in an encrypted format. If you choose not to password a particular pairing, you won't have to enter a password to view it but it still will only be viewable using this utility. If you do password a saved pair, the utility will require you to enter its associated password before it will display the data.
Note that regardless of whether you password a particular pair, the file it is saved in is encrypted with a simple string encryption algorithm.
Files created by this program are saved in the current user's AppData\Roaming\MyRolodex directory.