Roku has been on a roll lately, adding new free channels, and it's back again with four new channels to kick off August.

Each month, Roku typically expands its lineup for The Roku Channel users, adding free channels to the mix. The service's most recent expansion was pretty large, with 16 new offerings joining the fold.

Tubi is another free streaming service you can download on your Roku, and it's also home to a huge library of free movies and ...

The Roku Channel already has over 500 free live TV channels, and now there are even more.