Stripe

Stripe is payment infrastructure built for developers, covering card acceptance, subscriptions, marketplaces and payouts across more than forty countries.

Its documentation and API design are the reason it became the default for software businesses: integration takes hours rather than weeks, and edge cases like failed renewals and disputes have defined handling paths.

It is not available everywhere, and account eligibility depends on where your business is registered rather than where you live — the first thing to check before building on it.