Octopress - A static blogging framework for hackers, based on Jekyll
PayPal - PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller
DonorPerfect - Nonprofits use DonorPerfect Fundraising Software for their Donor Management, Grant & Gift Tracking, Moves Management, Mass Mailing needs and more.
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.
Rememble - Rememble is a 'washing line' for your digital bits and pieces.
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.