U ovome radu opisani su Qt razvojni alati i njihov razvoj. Kroz rad su spomenuti neki od značajnih Qt alata poput Qt Creator razvojnog okruženja, QML programskog jezika te Qt Designer vizualnog uređivača. Kao dio rada izrađena je i aplikacija za izračun provjesa vodiča dalekovoda koristeći Qt Creator razvojno okruženje. Kroz rad su opisane njene glavne funkcionalnosti te je dan prikaz izgleda aplikacije unutar Windows i Linux okruženja. Na kraju rada dani su prijedlozi za daljnji razvoj aplikacije.

This thesis describes the development tools used by the Qt framework and their development. Some of the most important Qt tools, such as the Qt Creator IDE, the QML programming language and the Qt Designer visual editor have been described through this thesis. A desktop application for calculating sag in overhead lines has been developed in Qt Creator as a part of the assignment. The main functionalities of this application have been described through this thesis and an example of the application running in Windows and Linux has been given. Suggestions about the further development of the application are given at the end of the thesis.