Theia for Facebook is a free extension to automate reverse-lookup and data collection about Facebook users.
samuelgrieser
http://www.secretlookup.com/
Anurag
Emphfy
http://www.snowfensive.com/
samanthakem
http://www.netspy.net/
vincent.bello
https://www.findpeoplesearch.com/
escovabr
https://geniehistorysearch.com
dlux.hu
