Citi - Banking and credit card services through web and mobile apps.
PayPal - PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller
HDFC Bank - HDFC Bank is India’s largest private sector lender by assets.
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.
ICICI Bank - Private sector Indian bank
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.