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.
AppToolkit SDK - Find your super users and engage with them!
bunq Apps - Create and market apps that work with bank accounts
Bonsai Payments - Simple invoicing & payments for small businesses and freelancers. Collect instant payments or set up recurring payments. Get paid via credit card or bank deposit in 100+ currencies.
Pilgrim SDK by Foursquare - Location data to understand & engage with your customers
The Brex API - Brex credit cards and business accounts help startups scale fast, and Brex’s API can make you even faster.