Orri Erling started his own DBMS development work in 1994, which was to become Kubl. Development of Kubl was initially financed by Infosto Group, publisher of Finland's largest free ads paper, as part of their in-house software development project for their on-line services. The on-line version of "Keltainen Pörssi" was at one time said to be Finland's most popular web site with 500,000 registered users. The Kubl database was prominently displayed in a ""Powered by Kubl"" logo on the search results.