CONSTELLATION SOFTWARE INC revenue for the last year amounted to 7.62 B EUR, the most of which — 5.52 B EUR — came from its highest performing source at the moment, Maintenance and Other Recurring, the year earlier bringing 4.21 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought CONSTELLATION SOFTWARE INC 3.50 B EUR, and the year before that — 2.62 B EUR.