FREEDOM251

Freedom251 › Finance & Accounting

Free and open first

Best Payment APIs in 2026

Payment APIs help software accept or manage payments through connected services. This list is for people choosing a payment tool for a website, app, or another supported platform.

  1. 1

    Airwallex Payments

    Free plan AndroidAPIiPhone+1

    Airwallex Payments offers multiple checkout routes, payment methods, and tools for managing acceptance and disputes.

    7.6 Free plan · paid from $12/user/mo Visit site
  2. 2

    Mollie

    Free plan AndroidAPIiPhone+1

    Mollie combines payment acceptance with business money-management products and developer integrations. Review transaction charges, terminal costs, and business-use eligibility for the intended setup.

    7.2 From €0/mo Visit site
  3. 3

    Adyen

    Paid AndroidAPIExtension+2

    Adyen offers a broad online payments platform with API checkout options and support for recurring and marketplace payments.

    6.1 From $0.13 Visit site
  4. 4

    Authorize.net

    Paid AndroidAPIiPhone+1

    Authorize.net supports several payment channels and recurring billing, with fraud tools and merchant support.

    5.9 From $25/mo Visit site
  5. 5

    Dwolla

    Paid APIWeb

    Dwolla offers payment-rail connectivity, payouts, wallets, open banking, and developer tooling for embedded-payment products.

    5.4 Pricing on request Visit site
  6. 6

    GoCardless Bank Account Data

    Paid APIWeb

    Choose GoCardless Bank Account Data when a business needs bank account and transaction information through a consent-based API.

    5.4 Pricing on request Visit site
  7. 7

    Braintree Fraud Protection

    Paid AndroidiPhoneWeb
    4.7 From $0.05 Visit site
  8. 8

    Stripe Payments

    Paid AndroidiPhoneWeb
    4.5 Visit site
  9. 9

    PayPal Checkout

    by PayPal
    Paid WebAPI

    PayPal Checkout combines online payments with recurring billing, invoicing, and marketplace support.

    4.4 Visit site
  10. 10

    Nuvei

    by Nuvei
    Paid
    3.8 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare platform support, pricing model, stated starting price, and access to a free plan. Check trial terms, and review an open-source licence if reading or changing code matters to your choice.

Questions

Do payment APIs on this list have free plans?

A free plan is listed for Airwallex Payments and Mollie. Other listings state no free plan or do not provide a free-plan detail.

Which platforms do these payment APIs support?

Platform labels include web, API, iOS, Android, and extension. Check an individual listing for the platform it supports.

Which payment API has pricing on request?

Dwolla and GoCardless Bank Account Data list pricing on request.

What is the lowest stated starting price?

Braintree Fraud Protection lists pricing from $0.05. Adyen lists pricing from $0.13.

More in Finance & Accounting