Old City Press is one of those web design firms that focuses on the essentials of responsive web design. The Virginia-based website design firm also likes to boast that it can help small businesses find an online presence and propel larger companies into untapped markets with equal adeptness. Old City Press' track record proves as much. Two factors are largely responsible for Old City Press' recent success - an embrace of responsive HTML and, secondly, Old City Press' use of the open-source software package known as WordPress. The former, responsive HTML, ensures that the websites that are created by Old City Press' designers work as intended and load properly across a host of mobile devices. Open-source coding means that websites can accommodate plug-ins and various multimedia tools. For instance, Old City Press' websites now use Magento as their e-commerce solution, which allows customers to efficiently checkout and make online purchases.