Compare NMI Payments vs. UniPay Gateway

NMI Payments gives developers, SaaS builders, ISVs and ISOs a simple path to embedded payments. As a full-stack processor, acquirer, and technology partner, NMI enables you to integrate, brand, and manage payment acceptance within your platform—without becoming a PayFac or building complex infrastructure. The platform combines flexibility, scalability, and speed, offering white-labeled payments infrastructure that keeps your brand front and center. With omnichannel support for in-store, online, in-app, and unattended payments, you can deliver a consistent merchant experience across every touchpoint. NMI also manages onboarding, compliance, and risk, freeing your team to focus on innovation and customer growth. Developer-First Experience NMI’s developer-first environment puts full control in your hands. Build, test, and launch payments in a modern sandbox with clear documentation and ready-to-use code snippets. Guided onboarding flows and API recipes simplify integration, while low-code and no-code tools accelerate deployment. Business users can evaluate monetization options with instant revenue calculators and self-service sign-up. Whether you’re embedding payments for the first time or scaling across channels, NMI helps you go live faster, stay compliant, and grow with confidence

UniPay is a commercial, open-source payment gateway that uses modern technology. It can be easily adapted to any business size. We are the payment processing company that provides connectivity, security, and valuable support around the world. Our advanced technology and functionalities allow us to address the unique needs of each customer. This includes merchant onboarding and underwriting, advanced chargeback management, Acquiring Relations development, Payment Facilitator assistance and implementation of EMV terminal solutions. UniPay Platform offers a white label solution that is affordable, as well as an on-premise software license (including source code), and the PayFac Payment Platform that ensures high-quality payment processing.