— FamilySearch.org
— GenWeb for whatever counties and states you are researching (just type into Google "GenWeb" + "(fill in name of state or county)"
— Cyndislist.com to see links for NC/SC & Scotland
— Linkpendium to see similar
— deathindexes.com (sister sites are at the bottom of that home page, under "Genealogy Resources" or something. Joe Beine lists all known online info, and whether it is fee or free.
Also check local societies and libraries in your localities of interest, to see if they've posted any online databases that you can access. Also, many public libraries offer access to Ancestry Library Edition, Heritage Quest, or some online newspaper sites. Check on what's available for you.