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.

AffiliateWP - A powerful affiliate marketing solution for WordPress.

Solo - Personal kanban boards hosted on your own server

ReferralMagic - Turn your users and customers into referral magnets.

Cash App - The easy way to send, spend, bank, and invest.

Echo - Golang HTTP server framework