1. Accenture
2. Atento SA
3. Bertelsmann SE & Co. KGaA
4. Capgemini
5. Cognizant
6. Go4Customer
7. HCL Technologies
8. Hinduja Global Solutions Ltd.
9. IBM Global Services
10. Infosys
11. Sitel Group
12. StarTek Inc.
13. Sykes Enterprises Inc.
14. SYNNEX Corp.
15. Tata Consultancy Services
16. Tech Mahindra
17. Teleperformance SE
18. Transcom Holding AB
19. TTEC Holdings Inc.
20. WNS Global Services