1. AECOM
2. Aedas
3. Arcadis N.V.
4. Australian Design & Drafting Services company
5. Bechtel Corporation
6. BluEntCAD
7. CallisonRTKL Inc.
8. CannonDesign
9. DP Architects
10. Excel Project Solutions
11. Fluor Corporation
12. Foster + Partners
13. Gensler
14. Hardlines Design Company
15. HDR Inc.
16. HKS Inc.
17. HOK Group Inc.
18. Jacobs Solutions Inc.
19. Mott MacDonald
20. Nikken Sekkei Ltd.
21. PCL Constructors Inc.
22. Perkins + Will
23. Stantec Inc.
24. Worley
25. WSP Global Inc.