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List of the Best Payment Processing Software in 2026

Rajat Gupta
Researched and Edited by Rajat Gupta
Rajat Gupta

Researched and Edited by Rajat Gupta

Last updated: May 18, 2026 · How we review

Payment Processing Software overview

Spotsaas tracks 139 products in Payment Processing Software, ranked by SpotScore — a blend of feature coverage, verified review ratings, and value. 8 let you start on a free trial, and 17 keep a free plan you can stay on. Most buyers here are Finance managers at subscription-based service companies evaluating secure and scalable payment solutions.

139
products listed
8
offer a free trial
17
have a free plan
35
priced per subscription
89
quote on request

Editor's Summary · Payment Processing Software

Klarna dominates by volume with 154,488 ratings at 4.1/5, driven by global scale across consumer-facing checkout flows and buy-now-pay-later installment options, priced on quotation for merchant accounts. Balance draws strong satisfaction at 4.5/5 across 20,705 ratings and is particularly used by B2B marketplaces needing net terms, invoicing, and credit workflows built directly into the checkout experience. Opayo scores 4.7/5 across 4,139 ratings on a subscription model and is a consistent pick for UK-based merchants that need PCI-compliant card processing with predictable monthly costs.

Payment processing software handles the end-to-end movement of funds between buyers and sellers, covering authorization, settlement, fraud screening, and reconciliation across card, digital wallet, and ACH payment methods. Core buyers are e-commerce operators, marketplace platforms, and finance teams at mid-market companies managing multi-currency or cross-border transactions with complex settlement requirements.

Quick picks for Payment Processing Software

  • Best overallKlarna
  • Best for B2B marketplaces with net termsBalance
  • Best for UK merchants on subscription pricingOpayo

Who gets the most from Payment Processing Software

  • 1Finance managers at subscription-based service companies evaluating secure and scalable payment solutions
  • 2Payment operations leads at e-commerce platforms needing multi-channel payment acceptance and integration
  • 3Sales directors at retail businesses seeking versatile payment methods including mobile and POS terminals
How to choose Payment Processing Software

If you prioritize security and scalability, filter by products with strong encryption and high availability features. For businesses requiring multi-channel payment acceptance, sort by those supporting diverse payment types like mobile, POS, and online. When transparency is key, filter by Free Trial or publicly available pricing, though most top products use quotation-based pricing.

Showing 121-139 out of 139

Braintree Direct - Payment Processing Software

Braintree Direct

Streamline payments with ease and confidence.

Best for: SMB teams · Mid-market

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What is Braintree Direct?

Braintree's powerful, easy-to-use payment processing software gives you everything you need to accept payments from your customers and start doing business in minutes.This process payments for merchants so they can accept credit cards and other payment cards online, on mobile devices, and ...

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Starts from $0.30

PayPal Here - Payment Processing Software

PayPal Here

Empowering businesses with secure mobile payments.

Best for: SMB teams · Mid-market · Enterprise

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What is PayPal Here?

PayPal makes online shopping (and in-store shopping) easy, safe and more secure wherever you want to accept payments. It is one of the most innovative mobile point-of-sale (mPOS) solutions available today.It is Designed to make business on the go easier than ever, PayPal Here is a credit card ...

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PayPal Here offers custom pricing plan

Pin Payments - Payment Processing Software

Pin Payments

Streamlining payments with top-notch security.

Best for: SMB teams · Mid-market

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What is Pin Payments?

Pin Payments is a feature-rich, secure, inexpensive, easy-to-install credit card processing application designed for small and e-commerce businesses.It is a very scalable and flexible platform that can operate with minimal staff overhead and provide the maximum security with rigorous PCI ...

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Pin Payments offers custom pricing plan

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Swipesum - Payment Processing Software

Swipesum

Streamline payments on a budget.

Best for: SMB teams · Mid-market · Enterprise

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What is Swipesum?

Swipesum's PayFlow payment processing software is the perfect solution for small business owners who want to process credit and debit cards through their website or mobile app while keeping their overall costs low. Offering an easy-to-use, cloud-based platform with full accounting capabilities ...

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Starts from $25/analysis, also offers free forever plan

Square Payments - Payment Processing Software

Square Payments

Simple and secure payments on-the-go.

Best for: SMB teams · Mid-market · Enterprise

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What is Square Payments?

Square Payments is a mobile and in-person payment processing solution used by small business owners — independent retailers, food vendors, and service providers — to accept card payments via smartphone or tablet without dedicated point-of-sale hardware. It combines a free card reader, simple ...

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Square Payments offers custom pricing plan

GoCardless - Payment Processing Software

GoCardless

Collect recurring payments straight from bank accounts.

Best for: SMB teams · Mid-market · Enterprise

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What is GoCardless?

GoCardless is a bank payment platform for collecting recurring payments directly from customers' bank accounts, using Direct Debit, ACH, Bacs, SEPA and open banking rather than card networks. It is built for subscriptions, invoicing, instalments and any business billing the same customers ...

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Free TrialTry Free →·

GoCardless offers custom pricing plan

What buyers evaluate in Payment Processing Software
Range of supported payment methods including credit cards, mobile wallets, POS, and phone/mail orders
Security features specific to payment processing such as encryption standards and compliance with financial regulations
Scalability and reliability of the platform to handle high transaction volumes and international payments
WePay - Payment Processing Software

WePay

Streamline your payments with WePay.

Best for: SMB teams · Mid-market · Enterprise

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What is WePay?

WePay is an all-in-one payment processing software. The platform enables merchants of all sizes, from small to large, to process credit and debit cards, online and offline payments in a number of different countries. We Pay can integrate with a variety of platforms that include Salesforce ...

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Chargezoom - Payment Processing Software

Chargezoom

Effortless payment processing for your business.

Best for: SMB teams · Mid-market · Enterprise

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What is Chargezoom?

ChargeZoom is a payment processing solution that makes accepting credit card payments easy. Our advanced online software and mobile app allow our clients to process payments from their own websites and mobile apps, using highly secure methods of encryption and proprietary processes. ChargeZoom ...

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Starts from $20/Month, also offers free forever plan

Genome Wallet - Payment Processing Software

Genome Wallet

Streamline your e-commerce payments seamlessly.

Best for: SMB teams · Mid-market · Enterprise

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What is Genome Wallet?

Genome is an all-in-one financial platform offering online IBAN accounts, multi-currency wallets, SEPA Instant transfers, SWIFT payments, Visa cards, and secure merchant payment solutions. Business accounts Open dedicated online business IBAN accounts for your company with a fully digital ...

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Starts from 10/month when Billed Monthly

Balance - Payment Processing Software

Balance

Streamline payments, maximize profits.

Best for: SMB teams · Mid-market · Enterprise

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What is Balance?

Balance is a B2B payment processing platform used by online merchants and marketplaces to support net terms, milestone-based billing, and flexible payment options at checkout — capabilities that standard consumer payment processors do not handle natively. It solves the problem of business ...

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Balance offers custom pricing plan

Amazon Pay - Payment Processing Software

Amazon Pay

Convenient payment processing for your Amazon sales.

Best for: SMB teams · Mid-market · Enterprise

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What is Amazon Pay?

Amazon Pay is a payment processing service for sellers on the Amazon marketplace that withdraw funds directly into your bank account. It is easy to use and works seamlessly with the millions of global Pay with Amazon customers already using the service for products and in-app purchasing in ...

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Starts from $0.30

Venmo for Business - Payment Processing Software

Venmo for Business

Streamlining business transactions, one click at a time.

Best for: SMB teams · Mid-market · Enterprise

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What is Venmo for Business?

Venmo for Business is a powerful next-generation solution that provides merchants with the ability to process credit and debit cards, as well assist with customer service, sales, marketing, and informational data. Based upon a robust and powerful platform, Venmo is a Software-as-a-Service ...

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Venmo for Business offers custom pricing plan

Opayo - Payment Processing Software

Opayo

Effortless payments for a thriving business.

Best for: SMB teams · Mid-market · Enterprise

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What is Opayo?

The Opayo Payment Processing Software is a cloud-based solution offered to merchants that provide you with the tools to accept all forms of payment online. With powerful features such as automated recurring billing and advanced reporting, you can breathe easier knowing your business is ...

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NuovoPay - Payment Processing Software

NuovoPay

Seamless payments, simplified solutions.

Best for: SMB teams · Mid-market · Enterprise

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What is NuovoPay?

NuovoPay is a payment processing software as a service (SaaS) that allows merchants to accept credit cards from the comfort of their desktop. This service offers tiered pricing options, no monthly or start-up fees, a PCI certified merchant account, and payouts via either PayPal or direct check ...

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Limonetik - Payment Processing Software

Limonetik

Effortlessly process payments and manage your business.

Best for: SMB teams · Mid-market · Enterprise

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What is Limonetik?

Limonetik is the software that you can use to process payments and manage your business. The software will help you collect info from customers and allows you to process credit cards. The customers will be able to view their statements online, download invoices and export their statements so ...

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Limonetik offers custom pricing plan

PayOp - Payment Processing Software

PayOp

Seamless payment processing for simplified transactions.

Best for: SMB teams · Mid-market · Enterprise

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What is PayOp?

PayOp is an integrated payment processing software solution designed to be used without a complicated layered technology infrastructure. It turns your debit and credit card terminal into a complete point-of-sale (POS) system by leveraging the framework, processes, and personnel you already have ...

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PayOp offers custom pricing plan

BluePay - Payment Processing Software

BluePay

Efficient payment processing for your business.

Best for: SMB teams · Mid-market

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What is BluePay?

BluePay is a payment processing application that enables you to integrate various payment methods into your online or physical store. It supports authorization, capture and refunds and the ability to process customer payments directly on-site via a hardware key or by entering information on ...

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BluePay offers custom pricing plan

PayU - Payment Processing Software

PayU

Securely accept payments with ease.

Best for: SMB teams · Mid-market · Enterprise

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What is PayU?

PayU is an online payment processing platform used by e-commerce merchants and online businesses in emerging markets — particularly India, Eastern Europe, and Latin America — to accept credit and debit card payments from customers. It provides a payment gateway and merchant account in a single ...

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PayU offers custom pricing plan

Stripe Payments - Payment Processing Software

Stripe Payments

Seamless payments, anytime, anywhere.

Best for: SMB teams · Mid-market · Enterprise

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What is Stripe Payments?

Stripe Payments is the most powerful and flexible way to accept payments on the web. It is a simple way to accept credit cards on your website, in your mobile app, or wherever payments are made.  In addition to accepting payments online, Stripe provides you with all the tools you need to ...

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Stripe Payments offers custom pricing plan

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