The plan to switch follows a directive by Russian President Vladimir to cut down dependence on technology from abroad and comes amid rising political tension with Europe and the US.
The report said the city would first get rid of Microsoft Exchange Server and the Outlook mail client on 6000 computers. These would be replaced with an email system provided by the state-owned Rostelecom, according to Artem Yermolaev, the head of technology for the city.
The new software, which has been developed by New Cloud Technologies, a Russian company, could be used on as many as 600,000 computers and servers, Yermolaev said, adding that the city would also consider replacing Windows and Microsoft Office.
The website Digital Russia reported that the state media company Rossiya Segodnya and Moscow’s regional government had moved from Oracle's database systems to the open source PostgreSQL alternative which was being software supported by local programmers.