Wirize - Payment checkout for freelancers
Ecosia - Ecosia is a green search engine that donates at least 80% of its profits from search ad revenue and...
ACH payments with Stripe - Accept bank payments with a few lines of code.
HandUp Campaigns - Assemble your community to donate to those in need
Giftbit Payment API - Stripe for gift cards
Tab for a Cause - Raise money for charity with each new tab you open