Up & Coming Extensions
Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.
Adds Themes menu to the Tools and Titlebar menus. Includes toolbar icon.
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".
Trueblock Plus is a fork of the Adblock Plus extension for blocking unwanted advertisements on the web. This fork provides the exact same features as Adblock plus, with the unpopular, unwanted "acceptable ads" (non-)feature turned off by default.
Customizations for Adblock Plus No Restart
This extension provides various customization options for the Adblock Plus user interface.
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled).
The South African English spell checker allows you to use place names, borrowed words, and other expressions that are unique to South Africa.
"No more eina, just a lekker spell checker!"
GNotifier No Restart
Add-on for Firefox and Thunderbird. Replaces built-in notifications with the OS native notifications. It supports most Linux Desktop Environments, Windows 8.1 & 10.
IP Whois Lookup & Website Reviews & Rating. Display country flag indicating website location. Alexa and Norton Antivirus Site Adviser. Supported: GoDaddy, NetworkSolutions, Dotster, 1and1, NameCheap, Register, Yahoo, 123-Reg, FatCow, Enom, FastHosts.
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.
Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
Control for which webpage form history is saved or not.
Enter accents, diacritics, diaeresis, umlauts, ligatures etc. with keyboards of various countries (us,uk,ie,fr,it,ru,de,sv) - via easy to remember shortcuts or menu. Also supports all textboxes of the application (such as search, filters).
Theme Font & Size Changer No Restart
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
Allows you to hide almost anything via context menu 'Remove Object'.
MathML-fonts No Restart
Fonts for Mozilla's MathML engine.
Private Tab No Restart
Adds private tabs.