Several websites such as Census Finder, Your Family and Yahoo Free People Search allow you to search for people for free. Others include Lycos People Search, Zoom Info and even Facebook.
In some cases, different sites allow you to search for specific information such as phone numbers. For instance, Switchboard, Lycos People Search, Reverse Lookup and White Pages help you search for phone numbers. Sites such as The Obituary Daily Times, the National Obituary Archive and the New York Times Obituaries page have extensive obituary databases. However, you must watch for some sites that provide you with teaser information then direct you to sign up for a paid service.