Giftbit Payment API - Stripe for gift cards
DonatePal - The new way to donate to charities
Raise - The easiest way to save money on the go
All or Nothing - Competitive donations for causes you care about.
Gemnote - Handwritten cards & premium custom gifts for companies
Engage - Engage is a PowerPoint add-in that lets people of any skill level create and automate visually impressive presentations with infographics, pictograms and data maps.