OPEN TEXT CO revenue for the last year amounted to 7.99 B CAD, the most of which — 3.68 B CAD — came from its highest performing source at the moment, Customer Support, the year earlier bringing 2.57 B CAD. The greatest contribution to the revenue figure was made by United States — last year it brought OPEN TEXT CO 4.11 B CAD, and the year before that — 3.38 B CAD.