Category: Reference

11. Prb.org
The Population Reference Bureau provides timely and objective information on U.S. and international population trends and their implications.
http://www.prb.org

12. Refman.com
Reference Manager Home Page
http://www.refman.com

13. Wordreference.com
Free online Oxford dictionaries - Spanish, French, Italian, German and more. Conjugations, audio pronunciations and forums for your questions.
http://www.wordreference.com

14. Thefreedictionary.com
Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia
http://www.thefreedictionary.com

15. Urbandictionary.com
  word of the day browse add edit remove book live chat blog random A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # new Urban Dictionary is the slang dictionary you wrote . Define your world 3,572,392 definitions written since 1999 Festivus
http://www.urbandictionary.com

16. Dict.leo.org
LEO Deutsch-Englisch Wörterbuch
http://dict.leo.org

17. Dict.tu-chemnitz.de
W rterbuch Deutsch-Englisch/Spanisch/Portugiesisch (BEOLINGUS, TU Chemnitz)
http://dict.tu-chemnitz.de

18. Skepdic.com
over 400 skeptical definitions and essays on occult, paranormal,supernatural and pseudoscientific ideas and practices with references to the best skeptical literature
http://skepdic.com

19. S9.com
The Biographical Dictionary contains information on 33,000 notable people from ancient times to the present day. The Dictionary is searchable by names, keywords, and dates.
http://www.s9.com

20. Babylon.com
Babylon 7 offers instant full text translation and dictionary software. Get instant offline and online dictionary results with a click of your mouse.
http://www.babylon.com