Project Management Institute - Orange County
- Provides member education and networking opportunities for project managers.
- http://www.pmi-oc.org

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.
- http://www.hcoc.org/

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.
- http://www.nawbo-oc.com/

Associated Commerce Exchange
- ACE is an association of professionals who exchange business referrals. Membership information.
- http://aceleads.com/