Miscellaneous
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Gmail Manager NG Requires Restart
Based on Gmail Manager by Todd Long. This fork is intended to a supported version of Gmail Manager since Todd appears to have gone MIA. Manage multiple Gmail accounts and receive new mail notifications.
Extension Auto-Installer
Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.
Copy As Plain Text Requires Restart
Removes formatting from copied text.
WebODF
Viewer for OpenDocument Format office files. It can display documents saved from LibreOffice, OpenOffice, Calligra, Abiword, Microsoft Word, Excel, PowerPoint. The documents should be saved in the OpenDocument Format.
SeaMonkey Update Server Cert HotFix Requires Restart
Adds the current Certificate used by the Official Update Server to SeaMonkey's acceptable list.
AutoCopy 2 Requires Restart
Copies selected text to the clipboard automatically.
Export for Thunderbird & Lightning Launcher Requires Restart
Export for Thunderbird & Lightning is the worldwide unique printing and exporting solution for Mozilla Thunderbird and Lightning for Windows.
Multi lingual user interface: English, German, French and Spanish
ImportExportTools Requires Restart
Adds some tools to import and export folders and messages
Web Cache View Plus Proxy Requires Restart
Displays a web cache and/or web proxy view of a web page. You can call it from menu of tab, page context, link context and maybe while page loading.
SolusVM VPS Monitor Requires Restart
Status Monitor for SolusVM-backed VPS.
TabSubmit
Lets the user direct the submission of a form to a new tab or window. [Bug #17754]
Flexible Identity Requires Restart
Selects an identity based on the recipients list when sending an email
GNOMErunner/GTK for Seamonkey 2.x Requires Restart
GNOMErunner/GTK - a classic unix theme for Seamonkey 2 (aka suiterunner)
using the GTK+ stock items and icons from the gnome iconset, resulting in a more consistent desktop integration on Unix.
Caret Out Requires Restart
Disables change of the caret browse mode by shortcut key(F7).
Addons Manager Hilite
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
MDN Interface Documentation Generator Requires Restart
Generate MDN Interface Documentation from IDL files.
To create your own collections, you must have a Mozilla Add-ons account.