For a few years now i frequently use the "Virmst" program to live my submissive life. It's a domination program, it acts like a Mistress or Master, depending on the setup file.
It's written for Windows by Sven and you can find it here:

 http://groups.yahoo.com/group/VirMst/

To make good use of Virmst of course you have to write a good setup file, that's in plain text and Sven provides enough documentation to get the job done. Not always easy i agree but with enough patience you can compose it to your needs. Or you can let a dominant make the setup file for you.

In my case i do it all by myself so i also can be sure i will not cross my personal limits and let me be honest i can add items i really enjoy. 

To know how it looks like just look at my gallery for Mistress Krissy. In that gallery i shall place screencaps of virmst as the writing of the setup file progresses. But at this moment there are already several "permissions" and "rules" implemented, just enough to use it again.

BTW: despite the program is written for Windows it can be easily used under Linux too using "wine" windows-emulator. That's what i do.
If you want to know more just PM me or visit the Yahoo Group.

Lucas