- American Industrial Hygiene Association - Southern California - Industrial hygiene professionals that seek to prevent workplace-related illness or injury. Includes membership information, upcoming events, job opportunities and resources.
- American Society of Civil Engineers - Los Angeles - Includes information about the organization, its events and its local branches.
- Better Business Bureau of the Southland - Serving Los Angeles, Orange, Riverside and San Bernardino Counties. Includes online complaint form, scam alerts, company reliability reports, member lists, and topics of interest.
- Building Industry Association - Greater Los Angeles/Ventura Chapter - A non-profit trade organization made up of companies and individual members who are actively involved in all facets of the homebuilding industry.
- Greater Antelope Valley Economic Alliance - Business alliance. Includes demographics, members, enterprise, foreign trade, education, quality of life, calendar and links.
- National Speakers Association, Greater Los Angeles Chapter - Membership is open to anyone who is a member of the national association. Includes member application, meetings, directory and fast track program.
- Press Photographers Association of Greater Los Angeles - Includes contests and a calendar of events.
- Southern California eBusiness Forum - A cross-industry group of professionals that promote electronic data interchange (EDI) and the free exchange of EDI information. Includes meetings, membership information, events, and resources.
