Square Online Payments provides an integrated checkout, invoicing, and POS solution for merchants. If you’re searching for other credit‑card processing platforms that deliver comparable features, competitive pricing, and robust APIs, here are 20 alternatives to evaluate.
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Developer‑friendly payment platform with extensive APIs, support for subscriptions, marketplace payouts, and global card acceptance.
Full‑service solution that lets merchants accept credit cards directly on their site while leveraging PayPal’s buyer protection.
A PayPal company offering seamless integration, recurring billing, and support for multiple payment methods including Apple Pay and Google Pay.
Long‑standing gateway with fraud detection, recurring billing, and easy integration for small‑ to mid‑size businesses.
Enterprise‑grade platform that unifies online, in‑app, and in‑store payments with advanced risk management and global acquiring.
Global payment processor offering omnichannel solutions, competitive interchange rates, and robust reporting tools.
Built‑in payment gateway for Shopify stores, handling credit‑card processing with automatic payouts and no third‑party fees.
All‑in‑one payment gateway with transparent pricing, recurring billing, and a focus on high‑risk merchant support.
Transparent, subscription‑based processor offering integrated POS, e‑commerce, and robust reporting for SMBs.
Payment and billing platform geared toward service‑based businesses, featuring recurring invoicing and automated reminders.
Versatile POS and payment system with a range of hardware options, app marketplace, and integrated online checkout.
Secure gateway focused on high‑volume merchants, offering tokenization, recurring billing, and detailed analytics.
Visa‑owned solution delivering advanced fraud management, tokenization, and global acquiring for enterprise merchants.
Platform for marketplaces and platforms, providing embedded payments, risk monitoring, and instant onboarding.
Leverages Amazon shopper accounts for checkout, offering familiar UI, fraud protection, and seamless integration for e‑commerce sites.
Global payment gateway supporting multiple currencies, recurring billing, and a suite of compliance tools.
Cross‑border payment network ideal for freelancers and marketplaces, offering card‑linked payouts and mass payments.
India‑focused payment gateway with instant settlement, subscription billing, and extensive SDKs for developers.
Emerging market payment processor supporting credit cards, digital wallets, and installment plans across LATAM, Europe, and Asia.
If you like Square’s ecosystem but need a pure API, the Square Payments API offers direct card processing without the full Square Online suite.