4D Payments SDK
No more internet payment gateway fees, direct integration with major processors is made easy with native components for your platform of choice.
4D Accounting SDK
Easy to use, native components that provide for quick development of fully integrated QuickBooks solutions.
4D Shipping SDK
Real-time integration with mail carriers. Implement shipping, tracking, label creation, rate calculation and address verification functionality into your solution.
Whether you are building a POS solution, a payment processing gateway server, or doing a custom payment integration, the 4D Payments Gateway is the right tool for you. Built on top of a robust library that has processed tens of billions in credit card payments the Gateway is fast, secure and very easy to use.
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Support for TSYS Interleaved transactions is included.
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