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.

Giftbit Payment API - Stripe for gift cards

Open.money - Open is a connected banking platform for business payments that simplifies the process of sending, receiving, and reconciling payments for businesses.

Raise - The easiest way to save money on the go

Razorpay - Payment gateway solution for India with robust, developer friendly API and simple economic pricing.

Gemnote - Handwritten cards & premium custom gifts for companies