1. Accenture PLC
2. Amdocs Inc.
3. Cisco Systems Inc.
4. Comarch SA
5. Hewlett Packard Enterprise Development LP
6. Huawei Technologies Co. Ltd.
7. International Business Machines Corporation
8. NEC Corporation
9. Nokia Corporation
10. Oracle Corporation
11. SAP SE
12. ServiceNow Inc.
13. Tata Consultancy Services Limited
14. Telefonaktiebolaget LM Ericsson
15. ZTE Corporation