In the last decade, we have been witnessing a radical development of the new GNSS constellations. Besides the well-known GPS and GLONASS systems, newly developed systems such as Galileo, BeiDou and QZSS become increasingly important. One of the major challenges of the International GNSS Service is generating a homogeneous, multi-GNSS products of precise orbits. Currently, the SLR technique significantly contributes
to the assessment and development of new multi-GNSS orbit models. Thanks to the adapting of the new generations of GNSS satellites to the SLR requirements, it became a valuable source of data, which allows for making an independent validation of microwave-based orbit products. In the result of the master thesis, a fully operational web-application called GOVUS has been developed. It allows for online, interactive visualizations and analyses of SLR validation results. The validation process is focused on COM orbits, deliver by CODE (Center for Orbit Determination in Europe) in the frame of the MGEX project. Moreover, the GOVUS database is an autonomous source of information about archival SLR validations results of COM orbits as well as laser stations and GNSS satellites. The created computational algorithms making use of the modified Bernese GNSS Software, provides fully automatic validation of new CODE's orbit products. Available modules allow for evaluating the orbit quality as well as for monitoring the efficiency and behavior of both particular laser stations and single satellites. The master thesis includes the comprehensive description of the functionality and the structure of the developed web-application as well as examples of analyses performed using only the service. Because of the unique character of the operational products based on the microwave and laser observations to the new GNSS systems, such as GLONASS, Galileo, BeiDou and QZSS, on the basis of the decision of the International Laser Ranging Service (ILRS) Governing Board and the ILRS Analysis Standing Committee, in March 2017 the service under the authority of Wroclaw University of Environmental and Life Sciences became the ILRS Associate Analysis Center (ILRS AAC).