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Open Source Point of Sale vs Square Point of Sale: catalog facts
Open Source Point of Sale	Square Point of Sale
Free Free and open source.	Freemium Sign-up is open on the website; check Square's pricing page for current plans and fees.
Web, Self-hosted	Web
Broad retail feature set including stock, invoicing and gift cards Multiuser with permission control	Payments, orders, inventory and staff scheduling in one system Separate setups for restaurants, retail, beauty and service businesses
Needs a PHP and MySQL server to run Interface is based on the older Bootstrap 3	Tied to Square's own payment processing Research does not detail fees or hardware requirements
Self-hosted	Hosted service
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.