Here is a freeware program, SaveIt that offers the possibility to password-protect nearly every Windows-program against its execution. When a user attempts to open a password protected application or document, he is automatically prompted for the password. However you can grant permission to individual users for accessing the protected application.
SaveIt is very simple to use. After installing the program, just right click on any application or documents (for example a desktop icon) that you want to protect, and select Send to - Protect through Saveit3 from the context menu (see screen shot). Now enter a password to protect it.
You can also run the program directly from your desktop and browse for programs and documents to protect it.
And also, this new version has the possibility to protect programs and publish them by, for example, internet or CD-ROMs; without SaveIt needs to be installed (only stand-alone-applications). This option just needs the Microsoft .NET Framework, which is installed on nearly every newer computer.
Even though the program shows one or two minor bug when removing a restriction, SaveIt is certainly a useful application for protecting a program or document from unauthorized access. Download SaveIt (via)