Google Payment API - Enable an easy-to-use checkout experience for customers
Pay Me Or Else! - How to avoid and deal with clients who don’t pay (ebook)
Giftbit Payment API - Stripe for gift cards
Spend Bill Gates' Money - Find out what and all you can buy with Bill's money 🤑
ACH payments with Stripe - Accept bank payments with a few lines of code.
WEEPO - Online wage portage platform