收到Sociz日志的启发，原来Firefox的书签管理器可以在标签页中打开，方便管理。Google了一下，原来很多管理器都可以在标签页中打开。使用方法，将下面的chrome地址复制到 Firefox 地址栏中然后回车就可以打开。

Note: The URL’s will obviously only work in Firefox.

1) Bookmarks Management （书签管理器）

Used for: Managing bookmarks, tags, and history.
URL: chrome://browser/content/places/places.xul

2) Downloads（下载管理器）

Used for: Managing past and active downloads.
URL: chrome://mozapps/content/downloads/downloads.xul

3) Extensions（扩展管理器）

Used for: Enabling, disabling, and uninstalling extensions, themes, and plugins.
URL: chrome://mozapps/content/extensions/extensions.xul

4) Saved Passwords（密码管理器）

Used for: Managing passwords stored by Firefox.
URL: chrome://passwordmgr/content/passwordManager.xul

5) Preferences（Firefox选项）

Used for: Configuring different options in the browser.
URL: chrome://browser/content/preferences/preferences.xul

Runner Up: Browser inside a Browser（将浏览器嵌入标签页中）

Used for: Displaying a browser inside a browser. This is more for fun than anything else.
URL: chrome://browser/content/browser.xul

[via CyberNet、Firefox Facts]