Mint.com: Pulls all your financial accounts into one place and see what's happening with all your accounts–checking, savings, investments, retirement–at any moment of the day.
Zillow.com: Find real estate market statistics including home values, listing prices, number of homes for sale and many other measurements.
Social Security Estimator: The Retirement Estimator gives estimates based on your actual Social Security earnings record. Please keep in mind that these are just estimates.
AnnualCreditReport.com: Fight identity theft by monitoring and reviewing your credit report.