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
Akribian - Akribian turns children into Mathemagicians with their new iOS app, Count on me!
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.
Cotrio - The most beautiful way to move your brain and imagination
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.
MathIsFun Times Table - Learn Your Multiplication Tables