Community supported online radio, (from their website) Over 30 channels of commercial-free, human-curated radio programming focusing on non-mainstream music.
It's been my go-to for years. Groove Salad is my current and steady jam, but Boot Liquor, Underground 80s, Digitalis, and 7inch Soul all get regular plays.
Boot Liquor was the station that introduced me to groups like The Devil Makes Three. I haven't listened in a few years, but it was an oasis of non-bro country back in the day.