Top 20 Alternatives to Square in Payment Gateway Software

Developer‑centric payment platform with robust APIs, support for recurring billing, marketplace payouts, and a suite of fraud‑prevention tools.

Globally recognized online payment service offering checkout, invoicing, recurring payments, and a robust seller protection program.

A PayPal subsidiary delivering seamless card, PayPal, Apple Pay, Google Pay, and Venmo acceptance with advanced fraud tools.

Enterprise‑grade gateway supporting over 250 payment methods, unified commerce, and real‑time risk management.

Long‑standing gateway offering card processing, recurring billing, e‑check support, and a simple virtual terminal.

Global payment processor with extensive acquiring capabilities, multi‑currency support, and advanced reporting.

Integrated payment solution for Shopify merchants, handling credit cards, Apple Pay, Google Pay, and fraud detection.

Leverages Amazon shopper accounts for fast checkout, offering fraud protection and seamless integration with e‑commerce platforms.

International payment gateway supporting 100+ currencies, subscription billing, and customizable checkout experiences.

Cross‑border payment platform enabling global payouts, multi‑currency receiving accounts, and API‑driven mass payments.

Embedded payments solution for platforms and marketplaces, offering instant onboarding, risk management, and ACH support.

Emerging‑market focused gateway with localized payment methods, recurring billing, and robust fraud detection.

India‑centric payment gateway providing card, net‑banking, UPI, and wallet acceptance with easy SDKs and subscription tools.

Popular Indian digital wallet and gateway offering QR code payments, UPI, and merchant financing options.

European‑focused gateway supporting SEPA, iDEAL, Bancontact, and a simple API for recurring and one‑off payments.

All‑in‑one payment processor for small businesses, featuring card processing, invoicing, and recurring billing.

Global payment gateway with a unified checkout, marketplace support, and extensive reporting dashboards.

Visa‑owned solution offering advanced fraud management, tokenization, and multi‑channel payment acceptance.

Fast‑growing gateway with a single API for cards, digital wallets, and local payment methods, plus real‑time analytics.

Buy‑now‑pay‑later provider that also offers traditional card processing and a smooth checkout overlay.