Pruvo - Hotels prices tend to change even after reservation. Pruvo will notify you when a price drop occurs, so you can rebook the exact room at a much lower price.
Omio - GoEuro's new app, book travel transport in Europe 🇪🇺
Yowsi - Organise Your Party or Event Easily
Busbud - Search city-to-city bus schedules, compare bus companies and book your tickets online, all over the world. Busbud is the world's bus station.