North American Industry Classification System (NAICS)

518210 - Data Processing, Hosting, and Related Services
519130 - Internet Publishing & Broadcasting & Web Search Portals
519190 - All Other Information Services
541511 - Custom Computer Programming Services
541512 - Computer Systems Design Services
541513 - Computer Facilities Management Services
541519 - Other Computer Related Services
541611 - Admin Mgmt & General Mgmt Consulting Services
541613 - Marketing Consulting Services
541614 - Process, Physical Distrib & Logistics Consulting Services
541618 - Other Management Consulting Services
541690 - Other Scientific and Technical Consulting Services
541712 - R &D in the Physical, Engineering, and Life Sciences
541930 - Translation and Interpretation Services
541990 - All Other Professional, Scientific, and Technical Services
561110 - Office Administrative Services
561611 - Investigation Services
611430 - Professional and Management Development Training
611691 - Exam Preparation and Tutoring
611710 - Educational Support Services

921190 - Other General Government Support  

Standard Industrial Classification (SIC)

8299 - Schools & Educational Services, NEC
8621 - Professional Organizations
8732 - Commercial Nonphysical Research
8733 - Noncommercial Research Organization
8741 - Management Services
8742 - Management Consulting Services
8743 - Public Relations Services
8744 - Facilities Support Services
8748 - Business Consulting, NEC
8999 - Sevices, NEC