Webydo - A code-free web design platform that empowers professional designers and agencies to create & manage pixel-perfect, responsive sites.
DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
Webflow - Build dynamic, responsive websites in your browser. Launch with a click. Or export your squeaky-clean code to host wherever you'd like. Discover the professional website builder made for designers.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
Google Sites - Access Google Sites with a free Google account (for personal use) or G Suite account (for business use).
Mizage Divvy - Divvy is an entirely new way of managing your workspace.