Avalanche Forecasts: http://www.avalancheforecasts.com/; “The easiest way to see avalanche conditions at-a-glance. Free. For iOS and Android.”
Camp Finder: http://www.campingroadtrip.com/camp-finder-iphone-app; $3.99. “Puts 19,000 Campgrounds, RV Parks and RV Resorts in Your Pocket”.
Gaia GPS: https://www.gaiagps.com/; “The Best Hiking App and Hiking Maps
Adventurers and professionals worldwide use Gaia GPS to plan, navigate, and stay safer in the woods.”
mountain hub: https://app.mountainhub.com/explore; “Connecting the Outdoor Community”.
California Department of Parks and Recreation: http://www.parks.ca.gov/; uses Reserve America.
Hipcamp: https://www.hipcamp.com/; “Get access to exclusive camping deals,
and the first look at new camps.”
“Recreation.gov is your gateway to discover America’s Outdoors and more!
Recreation.gov is your one-stop shop for trip planning, information sharing and reservations brought to you by 12 federal Participating Partners. Seven of these partner agencies including the Army Corps of Engineers, Forest Service, National Park Service, Bureau of Land Management, Bureau of Reclamation, Fish and Wildlife Service, and the National Archives, offer advance reservations at 2,500 federal areas for over 60,000 facilities and activities.”
Reserve America: http://www.reserveamerica.com/;
“Find Campgrounds, Marinas and More.
Your next adventure starts here. Search by the facility name if you know exactly where you want to go – we’ll find that one along with others in the area. Or enter a city, state, street name or zip code for recommendations near your destination.
To narrow your search, select the kind of facility you’re interested in and the type of site you’re looking for.”
The Dyrt: https://thedyrt.com/; “A BETTER WAY TO SEARCH