Out of the box, WebBlocks is a platform based on modern web technologies for building full-featured, responsive sites suited for all viewports including desktops, tablets and mobile devices. It leverages existing best-in-breed web tools, defines semantics based on modern web standards and includes a large suite of UI elements and Javascript interactivity libraries. However, WebBlocks is a lot more than just a set of semantics, elements and libraries. At it's core, it is a highly modular toolkit that can be customized to meet business needs, fitted to different development paradigms and integrated into existing web solutions.