This thesis analyses the usability of web technologies for the development of Internet commerce. The purpose was to utilize the knowledge, tools and skills acquired throughout university in order to develop a web shop. A private company in need of a new web site and payment system was used as a starting point - their former web site was analysed, as were other, well-known web shops, resulting in the requirements and functionalities applied to the newly developed web site. The theoretical part of the thesis both analyses and describes programming languages, frameworks, and other technologies that can be used for the development and creation of a web shop. The described technologies are: HTML, CSS, Sass, LESS, JavaScript, jQuery, Ajax, PHP, Wordpress, Magento, ASP.NET, MySQL, and WampServer. Furthermore, the most popular web shops in the Republic of Croatia were listed and described, namely eBay, Amazon, and eKupi. The term "payment gateway" was explained, followed by the description of several well-known services: PayPal, PayWay, Corvuspay, and WSPay. Finally, the architecture of the developed system was described, along with various use cases, either from the eyes of the client or the administrator.