Amazing list.. Let me contribute with the list that i found
http://www.youskillup.com/course/index.php?categoryid=1
http://www.pmzilla.com/pmzilla-free-pmp-tests
http://www.tutorialspoint.com/pmp-exams/pmp_mock_exams.htm
http://www.threon.com/de/pm-academy/pmi-pruefungsfragen/
http://www.testprepreview.com/pmp_practice.htmhttps://sites.google.com/site/pgmpguide/Home/pmp-1-20
http://www.certchamp.com/pmp-sample-questions.jsp
http://www.preparepm.com/mock1.html
http://blog.voightps.de/page/Free-example-questions-for-the-PMP-Exam
http://pmpbank.googlepages.com/pmpquestionbank
http://www.oliverlehmann.com/contents/free-downloads/175_PMP_Sample_Questions.pdf
http://www.headfirstlabs.com/PMP/free_exam/
http://www.trial-exams.com/
http://www.slideshare.net/UHS-Computer-Survey/capm-time-150-question-final-key
http://free.pm-exam-simulator.com/