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 overall — Klarna
- Best for B2B marketplaces with net terms — Balance
- Best for UK merchants on subscription pricing — Opayo
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 101-120 out of 139
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What is iwocaPay?
iwocaPay is a B2B payment solution used by UK small business owners and their trade customers to offer flexible payment terms — including buy-now-pay-later options — at the point of invoice or checkout. It solves the problem of business buyers who delay payment due to cash flow constraints by ...
Read more about iwocaPayiwocaPay offers custom pricing plan
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What is Checkout.com?
Checkout.com is a cloud-based payment processing platform used by enterprise and high-growth e-commerce businesses to accept card payments globally and manage payment routing, fraud detection, and reconciliation in one system. It operates as a white-label infrastructure layer, allowing ...
Read more about Checkout.comCheckout.com offers custom pricing plan
Global Payments
Transforming payment processing for seamless transactions.
Best for: SMB teams · Mid-market · Enterprise
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What is Global Payments?
Global Payments offers full-service, in-house, state-of-the-art Payment Processing Software that's been designed to simplify credit card processing through one central solution. Its comprehensive feature set provides easy access controls and reconciliation for merchants' businesses while ...
Read more about Global PaymentsGlobal Payments offers custom pricing plan
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Clearent
Effortlessly accept card payments for your business.
Best for: SMB teams · Mid-market · Enterprise
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What is Clearent?
Clearent payment processing software is the easiest way to accept charge cards and e-commerce payments for your business. The Clearent Payment Processing Software allows you to accept card payments through a variety of methods including mobile devices, email invoices, and traditional card ...
Read more about ClearentClearent offers custom pricing plan
Paysafe
Effortless payment processing for small businesses worldwide.
Best for: SMB teams · Mid-market · Enterprise
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What is Paysafe?
With Paysafe Payment Processing Software, you have the capacity to build a global payment platform. The program offers secure and flexible ways to accept payments. It's a payment gateway that provides robust functionality from credit card processing to eCommerce banking transactions and it ...
Read more about PaysafePaysafe offers custom pricing plan
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What is Paymentwall?
Paymentwall's payment processing software offers fully integrated shopping carts, marketing tools, and credit card processing. The solution allows merchants to receive payments from customers using the Internet, phone, mail, or at the point of sale in a variety of different ways. Paymentwall is ...
Read more about PaymentwallPaymentwall offers custom pricing plan
Merchant e-Solutions
Streamline payments and grow your business.
Best for: SMB teams · Mid-market · Enterprise
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What is Merchant e-Solutions?
Merchant e-Solutions is a web-based payment processing software that allows you to quickly and easily set up a merchant account for your business. The software allows you to accept Visa, MasterCard, Amex, and Discover on your website or at physical locations. Merchant e-Solutions is always ...
Read more about Merchant e-SolutionsMerchant e-Solutions offers custom pricing plan
CardWatch
Control Your Business with Powerful Payment Processing.
Best for: SMB teams · Mid-market · Enterprise
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What is CardWatch?
CardWatch is a payment processing component library built for software developers and IT teams that need to embed card acceptance and transaction management directly into Microsoft .NET business applications. It gives development teams programmatic control over payment workflows without routing ...
Read more about CardWatchCardWatch offers custom pricing plan
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What is Payfirma?
Payfirma's payment processing software empowers businesses of all sizes to accept payments quickly, securely and cost-effectively from anyone, anywhere. Payfirma allows you to make your business available 24/7, from virtually anywhere in the world.It is a payment processing solutions provider, ...
Read more about PayfirmaPayfirma offers custom pricing plan
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What is MagicPay?
A complete online payment processing and marketing platform, MagicPay is everything you need to start and run a successful business immediately. Our secure, robust payment gateway technology enables merchants to set up online shop fronts and accept all major credit cards, cryptocurrencies and ...
Read more about MagicPayMagicPay offers custom pricing plan
Fattmerchant
Revolutionize your business transactions with Fattmerchant.
Best for: SMB teams · Mid-market · Enterprise
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What is Fattmerchant?
Fattmerchant, now branded as Stax, is a payment processing platform for small and mid-sized US businesses that charges a flat monthly subscription plus interchange cost rather than a per-transaction markup, which lowers effective rates for businesses processing higher payment volumes. It ...
Read more about FattmerchantStarts from $49/Month
DusuPay
Secure online payment processing for businesses worldwide.
Best for: SMB teams · Mid-market · Enterprise
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What is DusuPay?
Dusupay.com is a payment processing software system that lets users process credit card transactions. The system is easy to use, secure, transaction-based pricing and online entity establishment for merchants. It payment processing software also comes with card verification options which allow ...
Read more about DusuPayDusuPay offers custom pricing plan
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What is Blackthorn Payments?
Blackthorn Payments is a truly versatile, easy to use payment processing software with an intuitive interface that makes your life easier. Whether you are just starting out, or have been involved with the industry for a long time, Blackthorn has everything you need to make the process of ...
Read more about Blackthorn PaymentsStarts from $575/Month
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What is Payline Data?
Payline Data is an integrated interchange-plus payment processing software that offers a proven payment solution that can scale from start-up to small and mid-sized businesses to large corporate enterprises. The intuitive interface improves tracking and managing of your payment processing ...
Read more about Payline DataPayline Data offers custom pricing plan
QuickBooks Payments
Get paid faster with QuickBooks Payments.
Best for: SMB teams · Mid-market · Enterprise
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What is QuickBooks Payments?
QuickBooks Payments is a payment processing service that makes it easier for your customers to pay you. It's all online, 24/7, so you can immediately start receiving funds from your customers. There's an option to choose multiple payment solutions including credit card, debit card, electronic ...
Read more about QuickBooks PaymentsStarts from $12.50/Month
PayJunction
Streamline payments with secure, 24/7 support.
Best for: SMB teams · Mid-market · Enterprise
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What is PayJunction?
PayJunction is a modern, enterprise-class, multi-channel payment processing software. It comes in a SaaS (Software as a Service) model for subscription-based revenue streams and with an easy to install on-premise version for single processors or mini-merchant banks. PayJunction is secure, ...
Read more about PayJunctionPayJunction offers custom pricing plan
Heartland Payment Processing
Efficient payment processing for your business.
Best for: SMB teams · Mid-market
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What is Heartland Payment Processing?
Heartland Payment Processing software was designed with convenience in mind. A "point of sale payment processing" system, it offers the ability to run a business without having to purchase bulky expensive equipment or hire a pricey staff. The software's date and time stamp can record customer ...
Read more about Heartland Payment ProcessingHeartland Payment Processing offers custom pricing plan
Shift4 Payments
Secure, affordable, and effortless payment processing.
Best for: SMB teams · Mid-market · Enterprise
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What is Shift4 Payments?
Shift4 Payments is a revolutionary merchant account payment processing solution. From our patented online technology that displays your shopping cart directly on a mobile phone or computer to the dynamic web-based reporting provided by Shift4's comprehensive suite of applications, we deliver ...
Read more about Shift4 PaymentsShift4 Payments offers custom pricing plan
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What is EPX?
Our EPX payment processing software is a cloud-based software program designed to handle multiple credit/debit/cash transactions and customer data. EPX is PCI-DSS compliant, easy-to-use, and comes in three editions, all written in Java programming language. This payment processing software is ...
Read more about EPXEPX offers custom pricing plan
CardConnect
Streamline your payments and grow your business.
Best for: SMB teams · Mid-market · Enterprise
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What is CardConnect?
CardConnect is a cloud based payment processing system that has been designed for business of all sizes and in any industry. CardConnect can be used to accept payments, manage inventory, fulfill orders, produce reports and much more. CardConnect is easy to use, affordable, and offers a ...
Read more about CardConnectCardConnect offers custom pricing plan
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Each round-up compares that product against the closest options on features, pricing and user ratings.
Frequently Asked Questions About Payment Processing Software
Stuck on something? We're here to help with all the questions and answers in one place.
The most important Payment Processing Software features to evaluate are Accounts Payable, Accounts Receivable, Bank Reconciliation, Billing and Invoicing, Cash Management, Collections. Most buyers prioritize ease of use, reporting, and integration capabilities when choosing a solution. Look for tools that cover your core workflow before comparing advanced features.
Payment Processing Software pricing varies widely — from free plans to enterprise contracts. 8 products on Spotsaas offer a free plan or trial, including Wallester, ePayPolicy, Plooto. Paid plans typically start around $10–$50/month per user. Check individual product pages for current pricing.
The top rated Payment Processing Software based on verified user reviews and SpotScore are LexisNexis Payment Solutions, Paymentwall, Omise. These tools consistently score highest on ease of use, feature depth, and customer support quality. Ratings are updated monthly based on real buyer feedback.
To choose the right Payment Processing Software, start by listing your must-have features — commonly Accounts Payable, Accounts Receivable, Bank Reconciliation, Billing and Invoicing, Cash Management, Collections. Then filter by team size, budget, and integrations you already use. Compare at least 3 options and use free trials to test before committing. Spotsaas lets you compare side-by-side in minutes.
Yes — 8 Payment Processing Software on Spotsaas offer a free plan or free trial. Popular free options include Wallester, ePayPolicy, Plooto. Free plans typically cover core features for small teams; paid upgrades unlock advanced reporting, integrations, and support.
The best Payment Processing Software for small businesses are affordable, quick to set up, and scale without complexity. Top picks for small teams are Flatpay, Nickel, PayTabs. Look for tools with per-user pricing, no long-term contracts, and strong onboarding support to minimize ramp-up time.
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].