TiVo is a digital video recorder (DVR) first introduced in January 1999 at CES that allows a user to watch and pause Live TV or to schedule and record TV programs to watch at a later time. TiVo units use a customized version of Linux as their operating system. They feature a built-in hard drive, and may include multiple tuner cards for recording between 2 and 4 channels simultaneously. The TiVo can also view and content over the Internet, display photos, watch Netflix, watch HBOGo, watch Hulu, listen to music, download Amazon movies, and more. A user can also schedule recordings of TV programs over the Internet when the TiVo unit is connected to a network. In the picture below, is an example of the TiVo Premiere, one of the latest TiVo boxes introduced.
The TiVo is the best DVR for most users and although it requires a monthly fee or big lifetime fee, there is no easier to use and complete DVR. On Apr 29, 2016, Rovi announces it will buy TiVo for $1.1 Billion.