General National

Ziprealty

Best online realtor service. Very accurate and fast MLS listing. Need register.
Major feature includes:
Search and access to over 1.3 million listings updated throughout the day,
Receive 20% of our commission,
Save up to 25% when you sell a house,
Search for New Construction, Fixer Uppers, Priced Reductions and Foreclosures,
Save the homes in a personalized "My Homes" list for viewing later,
Get email updates on the listings that you are interested in.

Realtor

The official site of the National Association of REALTORS. Very good MLS listing search. Search more than 4 million new and existing homes and rental properties across North America.
New webpage add a lot of web2.0 user functions.

Zillow

An online real estate service dedicated to helping you get an edge in real estate by providing you with valuable tools and information.
Zestimate help to estimate the property value. Zilliow does not have realtor license.

Home Gain

Provides real estate information and resources to guide homeowners and homebuyers through the process of selling and buying a house, condo or other property.

Trulia

Real Estate search. 4 ways to search smarter, find homes for sale & compare to others in your city; find local schools, sales prices, and real estate data; see price & popularity trends with our Heat Maps; share local knowledge with the Trulia Voices community.

Cyberhomes

Another real estate search. Search more than 100,000,000 property records Now you have access to the same data the professionals use. It's easy, free, and instantaneous.

Redfin

Redfin is an online real estate brokerage that puts you in charge of buying or selling your home, operating in Baltimore, Boston, Los Angeles, Orange County, Seattle, San Diego, the San Francisco Bay Area and Washington, D.C.

Realestateabc

Candidly informs homebuyers and home sellers about the real world of real estate, without puff, hype or sensationalism. Help consumers with insight into how things really work with straightforward analysis of market trends and "how to" guides.
Check the Agent Directory and the Home Values tool

Terabitz

Find all MLS properties updated daily at Delaware, Pennsylvania, New Hampshire, Southern California, New Jersey, Vermont, Massachusetts, Colorado Colorado.

Move

Operated by Realtor.com, offer new and existing homes and rental properties search across North America.

Yahoo Real Estate

National and regional real estate search and information, operated by Yahoo.com.

MSN Real Estate

National and regional real estate search and information, operated by MSN.com.

Nextag Real Estate

Value any home and nearby comparable properties; Review sales statistics for cities and states.