Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!
Airbnb Experiences - Airbnb expands beyond rentals — now hosting Experiences
Dinngo - Splitting payments the fun and easy way
Airbnb Live There - Don’t go there. Live there.
/Tab - The simple way to split a bill among friends.
GetYourGuide - Get tickets to the most popular attractions while travelling