High Quality Content by WIKIPEDIA articles! MythTV is a free and open source home entertainment application with a simplified "10-foot user interface" design for the living-room TV, and turns a computer with the necessary hardware into a network streamingdigital video recorder, a digital multimedia home entertainment system, or home theater personal computer. It can be considered as a free and open source alternative to Tivo or Windows Media Center. It runs on various operating systems, primarily Linux/Mac/FreeBSD.