Bill's Voice Commander started as an add-on to X10's Active Home Pro home automation software. Don't get us wrong, AHP is great by itself, but as George Jetson used to complain; "My button pushing finger is sore!" Well, welcome to the 21st century, where your lips can do the walking and give your sore fingers a rest!
Basically, BVC will let you give voice commands to control devices in your home and give you voice and audio feedback about what is going on.
PC Companion is an outgrowth of X10 Wavplayer, designed by our good friend tuicemen. Companion is another add-on to AHP which allows for many other functions outside of the AHP realm.
Monitors text messages sent to the PC, and reacts by sending X10 commands.