(Ranked by number of employees in RTP)
1. IBM
2. Glaxo Smith Kline, PLC
3. Cisco Systems
4. Nortel Networks
5. RTI International
6. U.S. Environmental Protection Agency
7. National Institute of Environmental Health Services
8. Sony Ericsson Mobile Communications
9. Biogen IDEC
10. Network Appliance
11. BASF Corporation Agriculture Product Center
12. Diosynth Biotechnology
13. Bayer Cropscience
14. Talecris Biotherapeutics
15. EISAI, Inc.
16. Dupont Electronic Technologies
17. Credit Suisse
18. Underwriters Laboratories, Inc.
19. The UNC Center for Public Television
20. BD Technologies
21. EMC Corporation
22. Syngenta Biotechnology, Inc.
23. Sumitomo Electric Lightwave Corp.
24. Triangle Transit Authority
25. Lenovo
