官方文件: Firefox 1.5 for Developers
http://developer.mozilla.org/en/docs/Firefox_1.5_for_Developers

Extend Firefox Contest 給的文件連結
http://developer.mozilla.org/contests/extendfirefox/documentation.php

How to create Firefox extensions
http://roachfiend.com/archives/2004/12/08/how-to-create-firefox-extensions

很多 Firefox Extension 的好文章
Science Library Pad
Thoughts on the use of technology and other issues for science libraries and science publishers.
http://scilib.typepad.com/science_library_pad/firefox_extensions/
http://scilib.typepad.com

Lazy Programmers (LP) Guide To Creating A Firefox Mozilla Extension.
http://www.gmacker.com/web/content/tutorial/firefox/firefoxtutorial.htm


http://www.google.com/mozilla/google.xul

Writing an Extension for Firefox
http://www.orablogs.com/duffblog/archives/000536.html