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
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Kittysplit - The easiest way of sharing costs with a group of friends
PaymentSpring - The all-in-one, developer-driven payment gateway
ihatemoney - Manage your shared expenses, easily