Wikipedia GRE
- Encyclopedia article which addresses the definition and issues relating to Graduate Records Examinations.
- http://en.wikipedia.org/wiki/Graduate_Record_Examination

Kaplan GRE
- Comprehensive test preparation, graduate school admissions consulting and sample questions.
- http://www.kaptest.com/gre

Princeton Review Taiwan
- Offers on-site GRE and TOEFL test preparation in Taiwan.
- http://www.princetonreview.com.tw/grad/

GRE Explorer
- Downloadable preparation courses with sample practice tests. Also includes graduate admissions information
- http://www.greexplorer.com/

Picture GRE Word of the Day
- Word games, mnemonics, word lists and picture words for the GRE, as well as free GRE word of the day by e-mail.
- http://www.greword.com

GRE Subject Test, test prep materials
- Offers study for the GRE Biochemistry, Cell and Molecular Biology. Part of the sales are donated to the education promotion for students living in low-income countries.
- http://www.grebiochemistry.org/

MyGRETutor
- A complete website with ample practice for the GRE, including practice questions, tutorials, and practice tests.
- http://www.mygretutor.com

GREdic word list
- An extensive GRE word list with detailed definitions.
- http://wordlist.gredic.com

GRE Quizzes
- Contains nine multiple-choice quizzes, with score tracking.
- http://www.quiz-tree.com/GRE_main.html

GRE Vocabulary Quiz
- Online quiz, consisting in matching words with definitions, in multiple choice format.
- http://www.rhettmaxwell.org/studyguide/testpreperation/

Graduate Record Examinations
- The official site by Educational Testing Services (ETS). Test registration, information for policymakers and teachers, and sample questions.
- http://www.ets.org/gre/

Guru's Home
- Offers a freeware program for vocabulary review including a customizable and sortable wordlist. Also sells a CD of the program to students in India.
- http://grewordlist.groupfetch.com

Soundkeepers: GRE Vocabulary Builder
- Personalizable word lists, flashcards, and multiple choice questions to help with vocabulary learning.
- http://www.soundkeepers.com/GRE

Vyom Educational Resources
- Large and small vocabulary lists for the GREs and TOEFL as well as over 1000 practice antonym questions.
- http://www.vyomworld.com/gre/index.asp