Responsive Grid System is described as 'This is the Responsive Grid System, a quick, easy and flexible way to create a responsive web site' and is an website in the development category. There are more than 50 alternatives to Responsive Grid System, not only websites but also apps for a variety of platforms, including Self-Hosted, Mac, Windows and Linux apps. The best Responsive Grid System alternative is Bootstrap, which is both free and Open Source. Other great sites and apps similar to Responsive Grid System are Tailwind CSS, Bulma, Semantic UI and Foundation.