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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.
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4D QuickBooks Integrator
Easy to use, native components that provide for quick development of fully integrated QuickBooks solutions.
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4D Shipping SDK
Real-time integration with mail carriers. Implement shipping, tracking, label creation, rate calculation and address verification functionality into your solution.
Gateway in a box – integrate with ease
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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Download free trial
30 day fully functional
free trial.Get started today with the 4D Payments Gateway and see for yourself how easy it is.
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Highlights
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What Clients Say
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I discovered your components after spending a week with First Data specs, what a relief! In two days I had my prototype ready for management review.
George S
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Our team was so relieved when we found your components. Within a few minutes, following the excellent documentation, we were processing credit cards. Thanks for a quality and value-for-money product.
Jeff Gayheart -
Your payment processing library is definitely worth it, it has saved us literally hundreds of development hours. And your support has been outstanding, patiently “holding our hand” as we integrated CC payment processing into our POS.
Albert G
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Do you wish to process transactions faster?
Support for TSYS Interleaved transactions is included.
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