As a traveler, sometimes I want to stay in a camp site, rather than in a hotel, motel or hostel. But sometimes it is very difficult to find this camp sites in the web. Is there any website or app that show all the camp sites available in an area? For example: Camp sites in Yosemite National Park. I acknowledge that there are federal websites but not a private one.
I don't think you will find something as universal as Trivago, Skyscanner, Kayak for campsites but your friendly neighborhood Google can yield some results that will let you book at least some of the sites online:
There is probably more but you should be able to find them on your own.