Wizualizacja nawigacji w serwisach typu discovery

Next generation Integrated Library Systems (NGILS) also known as discovery and delivery systems or search and discovery systems, are claimed to be significant innovation in information searching field as well as its visualisation methods. One of the explanation is extended retrieval scope including e-documents in data bases and repositories. Navigation systems have a significant meaning in properly functionality of NGILS. Navigation provide ways to achievement of users’ goals. Main aim of the article is a comparative analysis of navigation systems in selected NGILS: VuFind (open source), Primo ExLibris, Summon ProQuest, Encore Innovative Interfaces, ProlibIntegro, Virtua/Chamo. The visualisation layer of NGILS navigation mechanisms was also discussed. Optimal visualisation of interfaces and navigation assist users in making decision process, and in link selection.