Google Payment API - Enable an easy-to-use checkout experience for customers

Giftata - A free, fast, & simple way to always find the right gift

Giftbit Payment API - Stripe for gift cards

Superdays - Create unique gifts and social adventures for 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.

Snappy Gifts - Send the perfect gift in a Snap! They choose what they love💜