Free Concrete CMS themes, built for version 9 and kept current. Everything here is MIT licensed, installs as a package, and runs in production on this site before it is offered to anyone else.
Theme No 1
A Bootstrap 5 starter theme on Concrete's own Bedrock foundation, with two skins, self-hosted type, and editable areas on every template. Concrete 9 ships one modern free theme, Atomik. Cast is the second Bedrock starting point that the forums have been asking for.
At a glance
The commercial themes and add-ons Concrete5 Studio sold up to 2026 are listed on the retired products page, with what to use instead.
A Tailwind v4 theme is the experiment after this one. As far as we can tell there is no Tailwind theme for Concrete anywhere, which makes it either an obvious gap or an obvious warning.