EcoBroker International
- Organization offers continuing education for agents on energy efficiency and green homes. Includes database of brokers, affiliates, and green properties. Based in Evergreen, CO.
- http://www.ecobroker.com/

National Association of Certified Real Estate Agents
- Professional organization; includes details on membership, agent search, and contacts.
- http://www.crea.net/

National Association of Independent Real Estate Brokers
- Professional association for independent brokers and agents.
- http://nationalrealestatebrokers.org/

The Senior Advantage Real Estate Council
- Grants the Senior Real Estate Specialist (SRES) designation for agents specializing in properties for senior citizens. Includes newsletter, topics, reports, services.
- http://www.seniorsrealestate.com/

Women's Council of Realtors
- Creating business opportunities and developing skills to achieve each member's full potential for success.
- http://www.wcr.org