• Comms-care

• Compass Informatics

• CompuCal Calibration Solutions Ltd

• Compustaff.ie

• Computer Doctor

• Computer Futures

• Computer People

• Computer Technical Services

• ComputerJobs.ie

• Comvergent Limited

• Concept Personnel

• Connect 5

• Console Partners

• Consumer Data Protection (CDP)

• Continuous Solutions Ltd

• Contracting PLUS

• Convergys

• Cook Medical Ltd

• Cora Systems

• Core

• Cornhouse Consulting

• CORTBase Ltd.

• Costa Systems

• Costa Systems Ltd.