OPEN TEXT CORPORATION revenue for the last year amounted to 5.99 B CAD, the most of which — 2.57 B CAD — came from its highest performing source at the moment, Customer Support, the year earlier bringing 1.68 B CAD. The greatest contribution to the revenue figure was made by United States — last year it brought OPEN TEXT CORPORATION 3.38 B CAD, and the year before that — 2.49 B CAD.