Comparative analysis of national open data portals or whether your portal is ready to bring benefits from open data

This paper focuses on the analysis of usability of the national open data portals. Open [government] data are considered as one of the most influenceable tool for preventing and reducing corruption and reaching innovative solutions that create added value for society. Thus, it is important to ensure that they are provided in a form that are useful and suitable for the original purpose of the open data. Critical voices and many discussions on whether open government data and national open data portals are of sufficient quality appear more frequently. Therefore, this study deals with this topic and aims to find the main challenges that can negatively impact users' experience through an analysis of usability of 42 open data portals by applying a unified methodology on them allowing their comparative analysis to be carried out. This study highlights the weakest aspects for 42 national open data portals, pointing on both, the most common weakest points, and individual. The analysis carried out also identifies portals that can be considered as leaders and as an example for the less successful open data portals.