Google Payment API - Enable an easy-to-use checkout experience for customers
Mailjoy - Delightfully easy direct mail marketing. A DIY direct mail tool created for marketing and growth teams. Design, mail & track personalized direct mail postcards and letters. Digital marketers use Mailjoy to send data-driven mail campaigns.
Giftbit Payment API - Stripe for gift cards
Felt for iPhone - Handwritten cards for the modern world
ACH payments with Stripe - Accept bank payments with a few lines of code.
NanaGram - Text your photos and we'll mail 4x6 prints to your Nana.