Most Popular Extensions
Shows flag/country of involved Certification Authorities (CAs) for secured pages.
Quitomzilla helps you quit smoking while you surf the web or wait for new emails, showing the cigarettes, money and time you have saved since you quit...
InlineDisposition Reloaded No Restart
InlineDisposition Reloaded changes the disposition type of "Content-Disposition" response headers from "attachment" and "file" to "inline"
This extension implements RFC 2369 for Thunderbird: Special mailing list header fields in the mail are parsed, and the links are displayed in the extended header view. You can click them to simply go to the archive, request help or unsubscribe.
FireCsv No Restart
View pretty CSV directly from within Firefox and Thunderbird.
Add-on Preferences Button No Restart
Displays a menu that allows you to open the option/preference window for any add-on that has one.
Element Hiding Helper for Pan No Restart
Help you create element hiding rules for Pan to fight the text ads.
Macro Template No Restart
Macro Template is to replace mail templates with macros for date formatting.
Fixes up numerous SeaMonkey browser interface issues (eg. adding support for popup ALT attributes), as well as adding some handy features for developers and power users (eg. configure source viewer, work online/offline).
ScrapBook AutoSave Addon, with some extra features.
Integrates calendars events with Gnome clock applet
Plugin may hang on Fedora.
As a workaround uninstall evolution-ews.
JSON Inspector No Restart
Inspect JSON object from a URL or entered data.
Requires either DOM Inspector or DOM Inspector Plus! [dm] extension.
Lightweight add-on which adds to right-click menu 3 items allowing to close current tab, open a new one and reopen closed one. Right-click anywhere on site instead of using keyboard or finding buttons.
Tools > Options… for Linux No Restart
Moves Edit > Preferences to Tools > Options…
Bioinformatics tools on Mozilla based browsers
ChatZilla zh-CN language pack for ChatZilla 0.9.91.1
NiceReader is designed for web reading. You can customize font, color, size, background, specify the elements to read, filiter ad elements, filiter ad strings, automaticaly turn page.
Link suggestion: based on user's local browsing history only.
Browsing history searching: list the pages from where you visited one page, and all the other pages you visited from those pages. Keywords searching, Scrapbook support, naive sharing.
XPCOMViewer is tiny tool for exploring XPCOM components.