Free Tivo type software.

[andyl8u]

Don't have to pay any monthly fees. You just need a computer, tv tuner, remote, and large disk space. There's alot of other software and I will update later.

Free software from yahoo with image viewer, play videos on your computer, record tv, and play music and music video from launch.com:
http://go.connect.yahoo.com/go/tv/index

Linux base software. Easy to install. It comes with linux and software.
*edit*: It doesn't come with the linux os. Only the software.
http://www.mythtv.org/

[andyl8u]

This is the one that comes with the linux os and mythtv software. Download it, burn it on a cd, and boot in up to the computer. Easy instruction to follow.

http://www.mysettopbox.tv/knoppmyth.html