Top 30 Credit Card Processing Software for Small Businesses

All‑in‑one POS with transparent flat‑rate fees, free card reader, robust online store integration, and real‑time analytics.

Developer‑friendly online payment gateway with customizable APIs, support for recurring billing, and competitive per‑transaction pricing.

Widely recognized online and in‑store processor; offers PayPal Checkout, invoicing, and a free card reader for small retailers.

Integrated payment solution for Shopify merchants; no third‑party gateway fees, automatic fraud protection, and multi‑currency support.

Modular POS ecosystem with a range of hardware (Clover Go, Flex, Mini) and apps for inventory, loyalty, and employee management.

Seamlessly ties into QuickBooks accounting; offers both online and in‑person processing with same‑day deposits.

Restaurant‑focused POS with built‑in card processing, tip handling, and integrated online ordering.

Cloud‑based POS for retail with advanced inventory, e‑commerce sync, and competitive processing rates via Lightspeed Payments.

Transparent pricing model (interchange‑plus), no contracts, and robust reporting tools for growing businesses.

PayPal’s developer‑centric gateway; supports credit cards, PayPal, Apple Pay, and recurring billing with a single integration.

Long‑standing gateway offering virtual terminal, recurring billing, and extensive third‑party integrations.

Flat‑rate and interchange‑plus plans, custom pricing for high‑volume merchants, and robust fraud protection tools.

Simple mobile card reader with flat‑rate pricing; ideal for pop‑up shops, market stalls, and freelancers.

Compact card reader with QR‑code payments, inventory tracking, and integration with major e‑commerce platforms.

All‑in‑one payment and billing platform offering recurring invoices, ACH, and a free card‑swipe reader.

Enterprise‑grade gateway with transparent interchange‑plus pricing and support for high‑risk industries.

Global processor with flexible pricing, robust reporting, and a suite of tools for omnichannel merchants.

Offers the Clover hardware line plus a wide range of processing options for small to mid‑size businesses.

Free online store builder with integrated Square payment processing; no monthly fees, only transaction costs.

On‑premise card reader solution that extends Stripe’s online payment platform to in‑person sales.

Unified POS for Shopify merchants; leverages Shopify Payments for low‑cost processing and real‑time inventory sync.

Portable, Bluetooth‑enabled card reader for on‑the‑go businesses; integrates with the Clover ecosystem.

Rebranded Zettle offering a sleek card reader, QR payments, and seamless PayPal integration for small retailers.

Allows small merchants to accept Venmo payments; funds settle to a linked bank account within 1–2 business days.

Enhanced Square POS with advanced inventory, barcode scanning, and employee management for brick‑and‑mortar stores.

Legacy mobile card reader still supported; flat‑rate fees and integration with PayPal invoicing.

Enterprise‑grade gateway with transparent pricing, multi‑currency support, and a single platform for online, in‑store, and mobile.

All‑in‑one payment platform offering global card processing, subscription billing, and a simple checkout experience.

Cross‑border payment solution with card processing for marketplaces and freelancers; low‑cost international payouts.

Business account with integrated card payments, multi‑currency accounts, and competitive interchange‑plus rates.

Buy‑now‑pay‑later and card processing solution; boosts conversion with flexible financing options.

Online payment gateway with low‑cost card processing and integrated e‑wallet for international customers.

Emerging global processor focused on small businesses; offers simple pricing and localized payment methods.

Compact card reader with inventory and analytics; ideal for micro‑businesses and pop‑up shops.