Gumroad Memberships - Earn your audience's ongoing support
Plasso.com - Payments made simple. Sell subscriptions & products online.
GumHub - Sell access to your GitHub repos with Gumroad
PayPal.Me - Request money using your own personalized URL.
Flodesk - Simple, Flat rate, Unlimited, All-in-one newsletter solution.
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.