Calyx is elegant, modern and multi-purpose concrete5 theme. It is good for business, organisation, corporate, portfolio, technology and blog. It is responsive so you don't have to worry about your website to look awful in mobile devices. Also, it comes with custom block templates for commonly used blocks, other features listed below and customizable color elements straight from your dashboard. Calyx is compatible with Concrete5 version 5.5.1 up.
MY OTHER CONCRETE5 v5.6 THEME(S)
MY OTHER CONCRETE5 v5.7 THEME(S)