Responsive Websites are those that adjust with the size of the window, not the device. This means that the site will display nicely on any device wether iPhone 3, Samsung Galaxy S5 or on Joo Janta 200 Super-Chromatic Peril Sensitive Sunglasses. The button will take you to responsive.is where you can see how this site adjusts with the different size device window by selecting from the top banner
I write website applications with Python, Django and Mezzanine. These technologies are open source, which means that if I provide your website, you are not bound by proprietry software, and if you need a new feature such as a Wikki or Calendar System, there are plenty of free alternatives to plug in.