What are the best free alternatives to Square?

Top alternatives to Square include Mpesa Daraja Skills and MCP, Stripe, PayPal. All of these endpoints belong to the payment category.

Are these Square alternatives free to use?

Yes, all featured alternative APIs offer verified free developer tiers or zero-authentication public endpoints on FreeAPI.

How can I test these alternative APIs?

You can test each alternative service interactively using ready-to-run cURL, Fetch, and Python snippets directly on FreeAPI.

Home/payment/Square Alternatives

Top Square Alternatives & Similar APIs (2026)

Looking for alternatives to Square? Compare 8 verified free and public APIs in the payment category with rate limits, auth methods, and ready-to-use snippets.

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Alternatives Feature Comparison

8 Options

API Service	Auth Type	Rate Limit	CORS	Action
Mpesa Daraja Skills and MCP	Free Key	10,000 req/min (Sandbox)	HTTPS • CORS	Explore
Stripe	Free Key	100 req/sec	HTTPS • CORS	Explore
PayPal	Free Key	Variable	HTTPS • CORS	Explore
Plaid	Free Key	100 req/day	HTTPS • CORS	Explore
Braintree	Free Key	Variable	HTTPS • CORS	Explore
Coinbase Commerce	Free Key	Variable	HTTPS • CORS	Explore
Razorpay	Free Key	Variable	HTTPS • CORS	Explore
Mollie	Free Key	Variable	HTTPS • CORS	Explore

Detailed Breakdown of Square Alternatives

GET

Mpesa Daraja Skills and MCP

Agent Skills and Model Context Protocol (MCP) server for Safaricom's M-Pesa Daraja API: automated STK push, B2C payouts, and idempotent AI agent payment tools.

Ödeme ve BankacılıkAPI KeyCORS10,000 req/min (Sandbox)

GET

Stripe

Developer-first payment processing and billing infrastructure for global online payments.

Ödeme ve BankacılıkAPI KeyCORS100 req/sec

GET

PayPal

Global PayPal payment gateway, digital wallet checkouts, and recurring billing

Ödeme ve BankacılıkAPI KeyCORSVariable

GET

Plaid

Secure financial data network connecting apps to bank accounts and balances

Ödeme ve BankacılıkAPI KeyCORS100 req/day

GET

Braintree

Multi-method payment processing supporting credit cards, PayPal, and Apple Pay

Ödeme ve BankacılıkAPI KeyCORSVariable

GET

Coinbase Commerce

Accept cryptocurrency payments (Bitcoin, Ethereum, USDC) with zero volatility risk

Ödeme ve BankacılıkAPI KeyCORSVariable

GET

Razorpay

All-in-one payment gateway for Indian and global digital card/UPI transactions

Ödeme ve BankacılıkAPI KeyCORSVariable

GET

Mollie

European payment processing supporting iDEAL, SEPA transfers, and credit cards

Ödeme ve BankacılıkAPI KeyCORSVariable

Choosing the Best Alternative to Square

Which alternative is quickest to start?

Alternatives labeled "Zero-Auth" do not require registration or API keys. You can swap your endpoint URL and test in minutes without creating provider accounts.

Are these alternatives free for production?

All listed alternatives offer legitimate free tiers or open data licenses. Review the specific rate limits on each API detail page to ensure your traffic stays within quota.