TiVo is a DVR (digital video recorder) introduced at the January 1999 CES. It allows a user to pause or rewind live TV, and schedule the recording of TV programs to be played back later. The system also analyze your viewing habits, and recommend shows to watch and record.
The TiVo units run a custom operating system based on Linux. 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 HBO Go, 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.
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's still no easier to use and complete DVR. On Apr 29, 2016, Rovi announces it will buy TiVo for $1.1 billion.