I am using a OTA indoor antenna (just for testing) and get over 68 channel, 20 of them HD. I played with two services that worked well. One is Plex (you can get a yearly or lifetime license) and another one is Channel DVR (cheap and works really well) together with a SiliconDust HDHomeRun Connect 2-Tuner (you can get more) device. Overall I am impressed.
Streaming services like Hulu or youtube tv also work but OTA antenna and just hulu vod / netflix also works really well