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Winter CMS vs Concrete CMS: catalog facts
Winter CMS	Concrete CMS
Free Free and open source under the MIT licence, with paid support available.	Free Free and open source under the MIT licence.
Self-hosted	Self-hosted
Built on Laravel, familiar to PHP developers Plugin and theme marketplace	Permissive MIT licence Long-running project with legacy branches available
Needs a PHP server and Composer to install Aimed more at developers and agencies than casual site owners	Needs a PHP server and Composer to install Older concrete5 sites need upgrading to reach version 9
Self-hosted	Self-hosted
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	Not stated if an account is 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.