Commercial Databases
These databases carry a lot of information, some of which seems quite intrusive, if their claims about their records are correct. I have only ever used 192.com and Peopletracer, so can't vouch for the others.
People Search Lookups is a public records database that mainly covers the USA, Canada, the UK and Australia, though it does have coverage in some other countries too.
Gov Resources is a similar database, but is confined to the US.
192.com is a UK based database. You sign up and buy credits to view certain records, although some are available free of charge. I managed to find one cousin (for free) using 192.com as she was listed as a company director.
Peopletracer is a partner service of Ancestry.co.uk.
