!!Google Toolbar
*http://www.google.com/tools/firefox/toolbar/FT3/intl/ja/index.html?utm_source=ja-et-more&utm_medium=et&utm_campaign=ja&tbbrand=GZEZ

!!del.cio.us
*http://del.icio.us/help/firefox/extensionnew

!!Mozilla Firefox Thunderbird の拡張あれこれ

http://beau.g-com.ne.jp/mon-extension.html

!英辞郎

// http://beau.g-com.ne.jp/mon-extension.html#s3
http://beau.g-com.ne.jp/mon-extension2.html#s3

!!外部エディタの利用

*[External Editor Extension for Firefox （日本語対応版 v0.5.1.0）|http://kimitake.blogdns.net/item/350]
//*[mozex|http://www.cas.cmc.osaka-u.ac.jp/~paoon/OriginalDoc/]
*http://mozex.mozdev.org/
*[firefox からエディタを利用する方法|http://www.mew.org/~kazu/toy/firefox-editor.html]

!!Screen Capture

*[Pearl Crescent Page Saver|http://pearlcrescent.com/products/pagesaver/]
**[細長いウェブページを丸ごと画像として取り込む|http://shinka3.exblog.jp/5329711]
*[Save As Image|https://addons.mozilla.org/en-US/firefox/addon/3408]
**[紹介記事|http://sevendegrees.blogspot.com/2007/04/save-as-image.html]
*[Screengrab!|https://addons.mozilla.org/en-US/firefox/addon/1146]

!!Proxy Management

*[SwitchProxy Tool|https://addons.mozilla.org/extensions/moreinfo.php?id=125] (obsolete)
*[FoxyProxy|https://addons.mozilla.org/ja/firefox/addon/2464]
**http://foxyproxy.mozdev.org/index.html
**http://alectrope.ddo.jp/mt/archives/2006/10/05/firefox_foxyproxy
*[QuickProxy|https://addons.mozilla.org/en-US/firefox/addon/1557]
!!Misc.
*[Firebug|https://addons.mozilla.org/firefox/1843/]
**You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.
**http://www.getfirebug.com
**[IT戦記 - FireBug の新しいバージョンが便利すぎる件について|http://d.hatena.ne.jp/amachang/20060331/1143774045]
*[IE Tab|https://addons.mozilla.org/extensions/moreinfo.php?id=1419]
*http://roachfiend.com/archives/2005/03/03/allow-right-click/
*[DownThemAll|http://www.downthemall.net/]
*[Bookmark Backup, etc.|http://www.pikey.me.uk/mozilla/]
*http://philmccluskey.com/projects/flickrfox/
*http://dictionarysearch.mozdev.org/
*http://copyurlplus.mozdev.org/
**[Copy URL + 1.3.2 をインストールしてみた|http://fb.skr.jp/bowz/archives/001736.html]
*[Viamatic foXpose - Firefox Extension|https://addons.mozilla.org/extensions/moreinfo.php?application=firefox&id=1457]