| Primary NAICS Code | |
| 541512 | Computer System Design Services |
| Other NAICS Codes | |
| 493110 | General Warehousing and Storage |
| 518210 | Data Processing, Hosting, and Related Services |
| 519290 | Web Search Portals and All Other Information Services |
| 524292 | Third Party Administration of Insurance and Pension Funds |
| 541330 | Engineering Services |
| 541511 | Custom Computer Programming Services |
| 541512 | Computer Systems Design Services |
| 541513 | Computer Facilities Management Services |
| 541519 | Other Computer Related Services |
| 541611 | Administrative Management and General Management Consulting Services |
| 541614 | Process, Physical Distribution, and Logistics Consulting Services |
| 541618 | Other Management Consulting Services |
| 541620 | Environmental Consulting Services |
| 541690 | Other Scientific and Technical Consulting Services |
| 541714 | Research and Development in Biotechnology (except Nanobiotechnology) |
| 541715 | Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) |
| 541990 | All Other Professional, Scientific, and Technical Services |
| 561110 | Office Administrative Services |
| 561210 | Facilities Support Services |
| 561320 | Temporary Help Services |
| 561330 | Professional Employer Organizations |
| 561410 | Document Preparation Services |
| 561421 | Telephone Answering Services |
| 561920 | Convention and Trade Show Organizers |
| 611430 | Professional and Management Development Training |
| 611519 | Other Technical and Trade Schools |
| 621999 | All Other Miscellaneous Ambulatory Health Care Services |
| 811210 | Electronic and Precision Equipment Repair and Maintenance |
