FreeBackgroundCheck.org – Nicely organized website to access public records in all states. Free to use the Do-It-Yourself searches. Also this site has a premium search for an instant background check.
Federal Criminal History check – Conduct an FBI background check on yourself or someone else with there permission. You must submit fingerprints and there is a fee for the identification record request.
Free Criminal Records – Website to search criminal records for free. Links to public criminal record resources.
Dru Sjodin – National Sex Offender Search Search sex offenders nationwide through the Dept of Justice.
BOP Inmate Search – Search the Bureau of Prisons (BOP.gov) to find inmates nationwide. Search by inmate name or ID number.