• Education and Academic:

http://140.111.34.46/dict/ - 國語辭典。
http://140.111.34.46/newDict/dict/index.html - 教育部重編國語辭典修訂本。
http://evchk.wikia.com - 香港網絡大典。
http://humanum.arts.cuhk.edu.hk/Lexis/Lindict/ - 林語堂《當代漢英詞典》電子版。
http://ocw.mit.edu - MIT OpenCourseWare, an open educational resource publishing MIT Course Materials.
http://pewebdic2.cw.idm.fr - Longman Dictionary of Contemporary English online.
http://tw.britannica.com - 大英百科全書線上繁體中文版。
http://webcast.berkeley.edu/courses.php - UC Berkeley Webcasts.
http://www.askoxford.com/?view=uk - AskOxford: Free online dictionary resources from Oxford University Press.
http://www.britannica.com - 大英百科全書 Encyclopædia Britannica。
http://www.chiculture.net
http://www.encyclopedia.com - 哥倫比亞百科全書 Columbia Encyclopedia 。
http://www.keyschinese.com.hk - 啟思中國語文網。
http://www.m-w.com - Merriam-Webster Online.
http://www.wikipedia.org - Wikipedia.
http://www.youtube.com/user/MIT 
http://www.youtube.com/user/ucberkeley 
http://zh.wikipedia.org - 維基百科。

• Science:

http://epsych.msstate.edu - ePsych home page.
http://freescience.info - FreeScience.info.
http://scienceworld.wolfram.com - ScienceWorld.
http://www.lifeinuniverse.org - Life in Universe.
http://www.nasa.gov - National Aeronautics and Space Administration.
http://www.nature.com - Nature Publishing Group science journals, jobs, and information.
http://www.newscientist.com - New Scientist.
http://www.physicsforums.com - Physics Help and Math Help - Physics Forums.
http://www.sciam.com - Scientific American Magazine.
http://www.webelements.com - Chemistry WebElements Periodic Table.

• Writing:

http://darwin-online.org.uk - The complete work of Charles Darwin.
http://richarddawkins.net - Richard Dawkins.
http://www.britannica.com/blogs/author/istewart - Ian Stewart -Britannica Blog.
http://www.simonsingh.net - Simon Singh.
http://www.simonyi.ox.ac.uk/dawkins/WorldOfDawkins-archive/ - The World of Richard Dawkins.
http://www.stephenjaygould.org - The Unofficial Stephen Jay Gould Archive.