Tripsy - Planning your trip has gotten much easier.
Boatsetter - Rent a boat, with or without a captain. Powerboats and sailboats, anywhere in the country.
Sygic Travel Maps - Itinerary planner for independent travelers
Antlos - Airbnb for boats
Wanderlog - Collaborative travel planner with combined itinerary and map
GetMyBoat - Book boat rentals, charters, tours, and lessons in 171 countries around the world.