Here are some great services by top providers for viewers to watch free TV online. Some of these you may have never heard of.
Joost is brought you by the same folks that made Skye and it uses a P2P system for offering the content; great GUI, quality video, solid amounts of good content.
Zattoo Live TV: Available in seven countries.
In addition to Germany and Switzerland, Zattoo currently offers service in Spain, France, Denmark, Luxembourg and with a small channel line-up for the USA and the UK. Each country offers a specific, regional channel portfolio. For licensing reasons, the channels available depend on your country of residence. Opening an account, every user can access Zattoo on all devices on which our service is available.
Sprint TV provides instant, 24/7 access to a wide variety of great programming. Watch live broadcasts, special mobile programming and exclusive full-length, on-demand episodes. Many channels are included in our data plans, and others can be purchased for an additional fee.