List of the Best Payment Processing Software in 2026

What is inai?

Inai is the perfect platform for global payment integration that helps maximise profits for businesses. Its founders have extensive entrepreneurial and investor experience, and offer a range of flexible business and pricing models. There’s no coding necessary - businesses can use the payment ...

What is SwipeSimple?

SwipeSimple is a software platform designed to make digital payments for small businesses effortless and efficient. With built-in customization tools, merchants can quickly adjust tax rates, add items to the cart, and connect peripheral devices via USB to get going. With SwipeSimple's fully ...

What is InvoiceCloud?

InvoiceCloud offers a Software as a Service platform with the latest and most advanced user interface, user experience, security enhancements and updates. Customizable for your exact needs, you decide which features to enable and modify – and benefit from regular upgrades without any ...

What is Splitit?

Splitit is a flexible payment platform that enables shoppers to split purchases into manageable monthly installments using their existing credit cards—without new loans, applications, or added interest. Designed for e-commerce retailers, healthcare providers, education services, and home ...

What is PayPal Credit?

PayPal Credit is a powerful line of credit that provides convenience and control over your finances. With no annual fees and a flexible payment plan, you have the freedom to pay for your purchases immediately or over time. Get an instant credit line with easy and secure application process that ...

What is Zip?

Zip's platform allows merchants to enjoy increased conversion rates, stabilized customer loyalty, and no-delay payments. It's simple to set up without API integration required, offering compatible solutions with WooCommerce, Shopify, BigCommerce, and more. Experience complimentary, ...

What is Sezzle?

Sezzle is an accredited B Corp that simplifies the payment process for buyers with budget plans and finance options with absolutely no fees or interest! Customers can easily integrate Sezzle with renowned platforms, like Shopify Plus, WooCommerce and more, to improve sales and gain new ...

What is Laybuy?

Laybuy lets you get the purchases you want now and pay in six instalments with no interest! No more waiting - this stress-free payment plan is a great option for those that want to shop and pay later. Unlike buy now, pay later services, you'll get full protection from consumer laws with Laybuy, ...

What is Afterpay?

Afterpay enables customers to acquire what they need and want, while simultaneously building strong financial wellbeing and managing their expenses, by splitting the payments up over four installments, for online and in-store purchases. This innovative solution is dedicated to granting our ...

What is Affirm?

Affirm is a revolutionary financial service employing advanced technology to create disruption in the industry. We put customers first by offering financing solutions that are simple, straightforward and free of hidden charges. Our Affirm for Merchants program arms business owners with the ...

What is Wisetack?

Wisetack is an embedded consumer financing platform that lets businesses offer buy-now, pay-later options for in-person services. The API-driven integration handles the sign-up flow and customer experience end-to-end, so businesses can add financing without building custom payment infrastructure.

What is Klarna?

Klarna helps make shopping simpler and more enjoyable by allowing customers to track their purchases, make payments and log into their account with ease. With the goal of becoming the preferred way to shop around the world, it offers unique products and services in relation to payments, ...

What is Four?

Four is an innovative tech company focusing on giving customers the option to buy now and pay later as well as a variety of purchase financing solutions. We design eCommerce plugins that enable Retailers to offer their customers a diverse range of payment options for a more convenient shopping ...

What is Credit Key?

Credit Key enables businesses to integrate payments convenience and speed of B2C transactions into their own B2B checkout process. This innovative product is patent-protected and streamlines the order fulfillment process by allowing shoppers to complete their payment quickly in the moment. ...

What is Kindly Payment Reminder?

The Kindly Payment Reminder is a powerful tool designed to help businesses boost their revenue by ensuring prompt payment from customers. This user-friendly software simplifies the process of sending payment reminders to those with unpaid or incomplete orders through customizable email ...

What is Billycart?

Billycart, a leading SaaS solution, offers unparalleled payment experiences for businesses and their customers. Our platform allows businesses to effortlessly add subscription services with our user-friendly integration, enabling a seamless and efficient process. With Billycart, businesses can ...

What is Duffel Payments?

Duffel Payments, the newest offering from our SaaS Aggregator company, allows you to effortlessly sell flights and streamline your travel business. Gone are the days of complex and expensive upfront costs - Duffel Payments enables you to charge your customers directly through our easy-to-use ...

What is Whistle?

Whistle, with the tagline "Designed with the participant in mind," is a user-friendly platform that aims to improve retention, productivity, engagement, and profitability in businesses. By incorporating AI-informed nudges, behavioral science concepts, and machine learning tools, Whistle ...

What is GETTRX?

Introducing GETTRX - the solution that allows you to reduce cash processing fees and say goodbye to outdated payment methods. Our experienced team specializes in bankcard services and information infrastructure, providing a speedy turnaround on merchant applications. We believe in the success ...

What is Rapyd Collect?

Rapyd Collect: Revolutionizing Global Commerce Rapyd Collect is a game-changing product that empowers businesses to thrive in any local market across the globe. With our fintech-as-a-service platform, businesses can now easily integrate localized fintech and payment capabilities into their ...