Learning Technology Systems:issues, trends, challenges

This paper elaborates on a comparative analysis of contemporary LTSs. We have selected a number of the most important, commonly used, modern LTSs and put them through a thorough evaluation process, based on the services, tools, and features they support, and the usability of their hypertext user interface. The result of the evaluation is twofold: to explore the utility of LTSs and consequently discover the real nature of these systems, based on the features they support; and to delve into the usability of LTSs, a critical factor in the acceptance of these systems by the market