CampSage

CampSage watches sold-out campgrounds and tells you the moment someone cancels. The good sites — Yosemite, Big Sur, the Olympic Peninsula — sell out months ahead. But people cancel constantly, and those spots reappear for minutes at a time, at 2am, on a booking site you weren't refreshing. CampSage scans 25 reservation systems across the US and Canada — Recreation.gov, ReserveCalifornia, BC Parks, Washington, Oregon, Alberta, Ontario and more — about every 10 minutes on the fast lane, four times a day everywhere else. When a sold-out site opens, you get an email or push with the exact dates and a direct booking link. Right now it's tracking 2,566 campgrounds with live openings across 236 regions, and it has sent people through to book more than 28,000 times. Free: watch 3 campgrounds, alerts a few times a day. Pro ($5/mo or $29/yr): 25 watches, watch a whole area instead of a single campground, and the 10-minute scan. Also: an EV charging filter (campgrounds near Tesla, Rivian or other networks, ranked by real driving distance), a live availability map, and an open API at campsage.app/camp/api. iOS app: live on the App Store. Android: in closed beta — testers welcome. No account needed to use the map.