The master thesis introduces selected foreign OPACs (Online public access catalogues).

The introductory part is devoted to the development of OPACs, their features and weaknesses. It notes the expansion of library collections with digital objects and development of web technologies, which necessarily change the view of library catalogues and enable development of next generation OPACs.

The core part of the thesis is an analysis of selected next generation OPACs. The analysis focuses on search capabilities, work with search results and implementation of various supplemental functions (RSS channels, book cover preview, user-defined tags, reviews, etc.) that most users recognize from blogs, various social networks, online bookstores, etc. Following catalogues are presented: AquaBrowser, Evergreen, Koha, Scriblio, SOPAC, VIRGObeta, VuFind anad WorldCat Local. They are divided into four groups according to their basic properties: OPACs with closed source code, OPACs with open source code, OPACs which are part of a library system with open source code and OPACs with open source code based on a content management system.

The final section summarizes the results of the analysis and compares catalogues within each group. Further, possibilities for their future development are outlined. (The abstract refers to the original text.)

The article briefly notes problems the next generation of OPACs and introduces two catalogues with closed source code - AquaBrowser and WorldCat Local.