Mosaic

Mosaic by Nextend Web is a theme builder built around design systems and component reuse. Rather than building pages individually, you define components once and use them across your entire site, ensuring consistency and making global updates trivial. It supports dynamic data integration, so your components can pull content from your database and display it conditionally based on user context.

This is designed for agencies managing multiple sites or building complex applications within WordPress. Compared to simpler page builders focused on individual layouts, Mosaic's system-thinking approach means less repetitive work and more maintainable designs. It's particularly powerful if you're managing a brand with strict design guidelines or building client sites where consistency and updates matter.