Buying a Home:
Zillow – A good place to start looking at real estate in your area – MLS databases (usually available through your agent or Realtor) are the best once you get serious about it, though.
Managing & Saving Money:
Mint – Free money management software.
Be Centsable – I love their couponing method, and especially their coupon database!
Energy Star – Great if you’re shopping for new appliances, it also has information and recommendations for improving your home’s energy efficiency.
Fuel Economy – Compare cars based on their fuel economy, calculate your MPG, plus tips and information on new technologies.
Local Harvest – Find farmer’s markets, CSA’s, and other local, sustainable food sources near you.
Recyclebank – Learn new ways to live green! You can also earn points for what you recycle, and redeem them for rewards.
MA Specific Resources:
Mass Energy Consumers Alliance – A non-profit that offers a discount heating oil program and renewable energy options for MA residents.