Zelle - Zelle is a fast, safe and easy way to send money in minutes to your friends and family.
Tricount - Manage and share expenses with friends
PaymentSpring - The all-in-one, developer-driven payment gateway
Kittysplit - The easiest way of sharing costs with a group of friends
Lydia - Lydia lets you use your card whatever you need to pay, even a friend.
ihatemoney - Manage your shared expenses, easily