UNISYSTEMS S.A. is a 100% subsidiary of Info-Quest S.A., the largest IT Company in Greece, and operates within the »Solutions & Business Applications« Business Area of Info-Quest.

UNISYSTEMS S.A. has implemented some of the most significant IT projects in Greece, among them the Central Trading System of the Athens Stock and Derivative Exchange (OASHS), the CRM & HCM Systems for Pireaus Bank & Cyprus Bank and the Knowledge Management System for the Ministry of Press and Mass Media.