Concerned Homeowners
- Organization that advocates for homeowners in common ownership developments governed by homeowners associations.
- http://members.cox.net/concernedhomeowners/

Homeowner Gateway
- Directory provides resources for people that live in common ownership developments governed by homeowners associations.
- http://members.cox.net/terracewatch/

Nord Enterprises, Inc.
- Online system that allows HOAs to build and maintain sites; functions include page creation, event tracking, communication management and document handling.
- http://home-owners-assoc.com/

Neighborhood News Web
- Provides websites for neighborhood associations and property management companies.
- http://www.neighborhoodnewsweb.com

National Association of Housing Cooperatives
- The N.A.H.C. in the U.S. is a federation of housing cooperatives, individuals, and professionals that work with housing cooperatives.
- http://www.coophousing.org

ECHO: Executive Council of Home Owners
- Nonprofit membership corporation dedicated to assisting California homeowners associations. Provides help to homeowners associations on many fronts including finances, legal issues, insurance, maintenance, and management.
- http://www.echo-ca.org

National Board of Certification for Community Association Managers
- Administers a national certification program, CMCA, that provides a standard of knowledge required for community managers.
- http://www.nbccam.org/

AtHomeNet
- Online resource for interaction between residents, boardmembers, committees and property managers of homeowner and condo associations.
- http://www.athomenet.com

Community Associations Institute
- Provides education and resources to America's residential condominium, cooperative, and homeowner associations, and to the professionals and suppliers who serve them.
- http://www.caionline.org