American College Test (ACT)
http://www.actstudent.org

Graduate Management Admission Test (GMAT)
http://www.mba.com

Graduate Record Examinations (GRE)
http://www.gre.org

Law School Admission Test (LSAT)
http://www.lsac.org

Medical College Admission Test (MCAT)
http://aamc.org/mcat

Michigan Test for Teacher Certification (MTTC)
http://www.mttc.nesinc.com

Pharmacy College Admission Test (PCAT)
http://www.pcatweb.info

The Praxis Series:  Teacher Licensure and Certification
http://www.ets.org/praxis

Scholastic Aptitude Test (SAT)
http://www.collegeboard.com

Test of English as a Foreign Language (TOEFL)
http://www.toefl.org