Bókun

Bókun is a booking and distribution platform built specifically for operators of tours, sightseeing trips and experience-based activities. It's backed by Tripadvisor, so you know it's not a flash-in-the-pan tool but the backing of a major travel-industry player. It suits guides, small tour companies and local businesses that sell experiences and want all their bookings under one roof.

It works simply: you add a booking widget to your website (or let Bókun build a page for you) and customers can buy a spot on your activity any time, without you lifting a finger. You see every booking, your availability and how full each slot is in one place, and the system makes sure you never sell more spots than you actually have.