Amazium is described as '960 grid system with 12 columns for Responsive Web Design. PSD file which has the 960 grid setup for you based on 32px gutters/margins. Offsetting columns - if you need to position a column over by say 2 columns. Four main media queries: 1. browsers over 960px' and is an website in the Development category. There are more than 50 alternatives to Amazium, not only websites but also apps for a variety of platforms, including Self-Hosted solutions, Mac, Windows and Linux. The best alternative is Bootstrap, which is both free and Open Source. Other great sites and apps similar to Amazium are Materialize (Free, Open Source), Foundation (Free, Open Source), Purecss (Free, Open Source) and Tailwind CSS (Free, Open Source).