The main goal of the master's thesis is to create the web application for effective communication between a client and a designer. The application was tested on a sufficient number of users and it has been modified according to results of performed tests. The text includes future possibilities of development, evaluation of achieved results, analysis of requirements, design, implementation and testing.

Development of web applications is closely associated with testing. This master's thesis deals with the domain of testing. The goal of this thesis is to design a methodology of testing of web applications for small software company. The designed methodology results from OpenUP methodology and author's work experience. First, the theoretical part of this thesis is devoted to testing, history of testing and introduces several approaches to testing. Next, the theoretical part focuses on web applications and its specifics in light of testing. In view of the fact that the designed methodology is inspired by OpenUP methodology, this methodology including its basic principles and components is introduced in next separate chapter. The largest chapter describes the designed methodology of testing of web applications and its basic components: roles, activities and artifacts. Also errors and their lifecycles are examined. The thesis is concluded by a short muse upon the aspects of the implementation of the designed methodology in the environment of small company.

The diploma thesis deals with regression testing of the Campaign Manager web application of the Xtend product. The work interprets the software development methodologies and subsequently it describes the types of testing that are closely related to development. Furthermore, the work focuses on tools used for the graphical user interface testing and their mutual comparison. The next part of the work is dedicated to the creation of the development environment and it analyzes the structure of test cases that were developed in the created environment. The last section describes how the Campaign Manager was tested and how test results were generated and obtained.