Map browser - is the environment used for work with maps and the most popular portal system. Here you cannot only view data, but also search for data sets and places on maps based on place names, use thematic catalogues of spatial data services where services are grouped according to their popular fi elds of application. The map browser has measurement, comparison, embedded map link creation, and various statistics calculation tools; you can compile, save and print your own maps in a format of your choice; you can also download these maps and spatial data. For your convenience, we are developing new tools which will enable easy use of data without any special software.