The article provides a review of foreign and Russian experience of creating and implementation of on-line GIS projects as one of the trends of the development of historical computer science at the present stage. Considerable attention was paid to the review of historical GIS presented in the public domain as a result of large-scale studies on the spatial and geographical aspects of historical research. Beginning with the 1990‑s. big national and even supranational GIS projects were created in Europe, the UK, Holland, Belgium, China, etc., combining the reconstruction of the administrative-territorial boundaries, their changes with demographic and socio-economic data. In Russian historical science the development and creation of Web-GIS are on the formative stage. This is due to the general trend of the use of GIS in Russian historical research. Nevertheless, the implementation of Russian web-GIS projects is an upcoming trend of “digital history” and promotes the intensification of humanitarian online technologies and historical- oriented internet resources.