PayPal.Me - Request money using your own personalized URL.

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.

Zipsell - A free, open source platform for selling digital downloads

Bonsai - One platform to streamline your entire business

Solo - Personal kanban boards hosted on your own server

Payzo - Accept credit cards with zero coding (for freelancers)