Cord-cutting is popular, and with good reason - cable bills have become exorbitant, and we end up paying for dozens of channels that we never watch. For many people, though, there is no good alternative for popular cable channels like HGTV, Food Network, and Bravo. If you're willing to pay for service but want to lower your bill, or you have high-speed Internet but you don't have access to cable or satellite TV, the live TV streaming services discussed below are available on Roku and offer an alternative to traditional cable and satellite television.