You might want to try FSBO websites such as
Owners.com - Homes For Sale By Owner (FSBO) Real Estate Website (http://www.owners.com - broken link) and
For Sale By Owner (FSBO), Sell home house condo Buy Real Estate MLS, search by town or zip code. Also check local listings in Pennysaver.
Just keep in mind that generally speaking FSBOs are asking higher prices for their homes than what the market demands, and yes, most of them end up selling through realtors after they fail to do it themselves.
While it is certainly possibly to buy directly from the owner, why would you want to limit yourself to FSBOs only? As a buyer you certainly have a great advantage in the current market. You have a lot of properties to look at and choose from, and most sellers are willing to negotiate. You can also have a benefit of being represented by the buyer's agent (for free) who will help you to find the best property that matches your criteria, negotiate the best price for that property, and guide you through the whole home buying process!