Payments APIs

Popular first highlights editorial picks, then ranks providers by monthly downloads of their official SDKs on npm and PyPI (measured 2026-10-18). Others follow A–Z.

Spreedly

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Stax

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Stripe Payment Links

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SumUp

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sunday

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SurePay

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Sway

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SWIFT

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The Clearing House

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Thepeer

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Till Payments

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Tillypay

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Toss (토스)

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Transact Payments

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TransferMate

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Tremendous

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Tribe Payments

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Twisto

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Tyro Payments

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Unified

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Unitplus

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Unpaid

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UPayments

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Vantiv

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VibePay

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Visa

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Visa Direct

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VÖB-ZVD Processing

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VoPay

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VR Payment

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VyaPay

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Wells Fargo Merchant Services

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WePay

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Wirecard

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Worldline

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Worldpay

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Xelda

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Xfers

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Yandex.Checkout

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YAP

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Yoco

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Zalando Payments

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Zelf

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Zelle

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Zoomit

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ZOOZ

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Counts reflect unique named profiles assigned to this category. Documentation and integration details vary by provider.