| Accenture | Accenture Healthcare | ||
| Atos | Bain & Company | ||
| Booz & Company | Booz Allen Hamilton | ||
| Boston Consulting Group | CACI | ||
| Capgemini | CGI | ||
| Cisco Services | Cognizant | ||
| Computer Sciences Corp. | CSC Healthcare | ||
| Dell Perot Healthcare | Dell Services | ||
| Deloitte Consulting | Fujitsu | ||
| General Dynamics | Genpact | ||
| Getronics NV | HCL Technologies | ||
| HP Services | HP Services Healthcare | ||
| IBM Global Services | IBM Healthcare | ||
| Infosys Technologies LTD | L3 | ||
| Lockheed Martin | Logica | ||
| ManTech | McKinsey & Co. | ||
| Northrop Grumman | Raytheon | ||
| SAIC | T-Systems | ||
| Tata Consultancy Services | Unisys Corp. | ||
| Wipro Ltd. | Xerox Services/ACS |