Payment processing software helps merchants accept online payments, choose checkout integration paths, manage payment methods and payouts, and handle refunds, disputes, and fraud workflows.
Category snapshot
10 published software profiles
Online checkout, payment methods, payouts, disputes, and transaction processing.
Relevant software
Payment platform with hosted, embedded, no-code, and API-based paths for accepting online and in-person payments.
Best for
Merchants and software teams that want flexible checkout options, broad payment-method support, and room for custom integration.
Free trial
Not applicable
Free plan
Not applicable
Online checkout product for accepting PayPal payments, major cards, and eligible alternative methods through hosted, platform, API, or no-code paths.
Best for
Merchants that want PayPal at checkout alongside card acceptance and a choice of ecommerce-platform, developer, or payment-link setup paths.
Free trial
Not applicable
Free plan
Not applicable
Global payment platform for accepting online, in-app, and in-person payments across cards, wallets, local methods, acquiring, risk, and reporting workflows.
Best for
Mid-market and enterprise merchants or platforms that need global payment-method coverage, custom integration, and unified online and in-person payment operations.
Free trial
Not applicable
Free plan
Not applicable
Payment gateway and optional bundled merchant-account service for accepting cards, digital wallets, eCheck payments, recurring billing, invoices, and virtual-terminal transactions.
Best for
US and Canada merchants that want an established gateway for an existing merchant account or a bundled path with hosted forms, recurring billing, and customer profiles.
Free trial
Unknown
Free plan
No
PayPal payment-gateway platform for cards, PayPal, Venmo, digital wallets, recurring billing, marketplace payments, and developer-led checkout integrations.
Best for
Online businesses that need a customizable gateway with PayPal wallet support, card processing, and APIs for more complex checkout flows.
Free trial
Not applicable
Free plan
No
Online payment tools from Square for ecommerce checkout, invoices, payment links, subscriptions, virtual terminal transactions, and developer APIs.
Best for
Small and midsize merchants that want online payments connected to Square's POS, customer, inventory, and reporting ecosystem.
Free trial
Not applicable
Free plan
Yes
Global payment platform for card acquiring, alternative payment methods, payouts, fraud tools, payment optimization, and unified reporting.
Best for
Scaling and enterprise digital businesses that need international acquiring, local payment methods, and configurable payment infrastructure.
Free trial
Not applicable
Free plan
No
Global merchant-acquiring and payment platform for ecommerce, in-person payments, alternative methods, fraud management, and enterprise payment operations.
Best for
Established merchants that need broad geographic acquiring coverage and coordinated online and in-person payment services.
Free trial
Not applicable
Free plan
No
European payment service provider for cards, bank payments, local methods, recurring payments, payment links, invoicing, and marketplace flows.
Best for
European ecommerce businesses that want local payment methods and straightforward transaction pricing without a long fixed contract.
Free trial
Not applicable
Free plan
No
Digital-wallet checkout that lets shoppers use payment and address details from their Amazon account on participating merchant websites.
Best for
Online merchants that want to add a familiar wallet option alongside their primary card and alternative-payment checkout methods.
Free trial
Not applicable
Free plan
No
Online checkout and payment options for hosted checkout, wallet-heavy selling, payment links, an existing merchant account, and global enterprise commerce.
Read the shortlistPractical evaluation guide
Simplify ecommerce payment operations across checkout, authorization, capture, order status, refunds, disputes, payouts, and reconciliation.
Read the guideCompare hosted checkout, payment links, ecommerce plugins, embedded components, and custom APIs based on your team's implementation capacity and desired checkout control.
Model total cost beyond the headline transaction rate, including international cards, currency conversion, disputes, refunds, accelerated payouts, subscriptions, and optional fraud tools.
Confirm supported countries, currencies, payment methods, payout timing, account requirements, dispute workflows, and subscription or marketplace support for your business model.
A gateway securely passes payment information for authorization, while a processor coordinates the transaction through financial networks and settlement. Many modern providers bundle both functions, so merchants should compare the complete checkout, processing, payout, and dispute workflow.
No. Payment-method coverage, checkout conversion, international fees, payout timing, dispute handling, fraud controls, reliability, integration effort, and support can matter as much as the published domestic card rate.
Build the rest of your stack
Merchants evaluating Payment Processing often need to coordinate these adjacent parts of the commerce stack.
Storefront and commerce engines for selling online.
Risk scoring, order review, chargeback protection, and fraud workflows.
Bookkeeping, reconciliation, tax, and financial reporting tools.
In-person checkout, retail hardware, payments, inventory, and store operations.