The aim of this bachelor thesis is to provide a theoretical background for GUI testing, to perform market analysis of tools that are available for GUI testing and to demonstrate practically GUI testing using one selected tool. The goals in the first part are achieved through the analysis of scientific literature, scientific articles and Internet sources. In the second part of this work it was necessary to manage the practical aspects of testing and to take over the analysis of the current market for testing GUI applications. The benefit of this work is a summary of theoretical knowledge about the particular topic, current overview of available tools and practical demonstration of one testing tool. The work is divided into two parts. The aim...