Who is the competition?
Ropewiki is a collective website of canyoneering locations. They do include some hiking and caving as well. This website is really great as it provides a lot of different kinds of information related to each canyon. The one thing that they could really improve upon is having updated information. Things change in canyons, but only the popular canyons get updated regularly. The issue with this is people manual have to go and inspect the canyon before submitting a change request. I think the two things they need to add are a weather report for the next week and then a CFS (Cubic Feet per Second) for canyons that have running water.
This website is mainly all rock climbing and bouldering. This website offers the different areas that climbs can be found and what their ratings are. The one thing it is missing is pictures of the route. There are many climbs that are next to others and it can be confusing at times to know which is which.