In the first chapter of this graduation paper, the concept of augmented reality is described, and there are examples where it can be applied. Second chapter explains the systems which are used in development of augmented reality. Three systems have been described: Artoolkit, D'Fusion and Vuforia. Architecture of each system has been presented in detail, including all of their advantages and disadvantages, all with a goal to make a final comparison between them which was also a primary task of this graduation paper. Comparison has been made on the following grounds: simplicity of use, cross- functionality, tracking, ability to design your own markers, ability to track markers and additional options. Comparison showed that each system has it`s own pros and cons in comparison to other two, and that the choice of a system is determined by the preferences of the final user and his needs.