- Associated Commerce Exchange - ACE is an association of professionals who exchange business referrals. Membership information.
- Association of Certified Fraud Examiners, Orange County Chapter - Includes information about events and meetings.
- Hispanic Chamber of Commerce of Orange County - Promotes and supports the unique Hispanic business concerns. The resources of the organization are directed to the economic prosperity of its members and contributes to the overall multi-cultural economic development of Orange County.
- National Association of Women Business Owners - Orange County Chapter - A non-profit business organization providing meetings, news, networking, member directory and resources for local female entrepreneurs and professionals. Includes calendar, members and membership information.
- Octane - Networking organization for Orange County's information technology and biomedical industries.
- Orange County Institute for Women Entrepreneurs - Non-profit business development program provides services and programs for the economic advancement of women. Offers services in English, Spanish and Vietnamese.
- Project Management Institute - Orange County - Provides member education and networking opportunities for project managers.
