○ Firebug
https://addons.mozilla.org/ja/firefox/addon/1843

○ functions for keyconfig
http://www.pqrs.org/tekezo/firefox/extensions/functions_for_keyconfig/index.html.ja
○kyeconfig 20060828

○ Gmai Notifier
https://addons.mozilla.org/ja/firefox/addon/173

○ Google Toolbar for Firefox
http://www.google.com/tools/firefox/toolbar/FT2/intl/ja/

○ GooglePedia
https://addons.mozilla.org/ja/firefox/addon/2517

○ Greasemonkey
https://addons.mozilla.org/ja/firefox/addon/748

○ Header Monitor
https://addons.mozilla.org/ja/firefox/addon/575

○ LiveHTTP Header
https://addons.mozilla.org/ja/firefox/addon/3829

○ MouseGestures
https://addons.mozilla.org/ja/firefox/addon/39

○ Stylish
https://addons.mozilla.org/ja/firefox/addon/2108

○ Tab Mix Plus
https://addons.mozilla.org/ja/firefox/addon/1122

○ はてなブックマークカウンタ
http://miniturbo.org/product/extension/sbmcounter/

○ フォクすけといっしょ
https://addons.mozilla.org/ja/firefox/addon/3867

○ Outpuz
http://outputz.com/

○ Menu Editor
http://menueditor.mozdev.org/

○ Split Browser
https://addons.mozilla.org/ja/firefox/addon/4287