Add-ons
Most Popular See all »
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A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.13,508 users -
This extension is based on László Németh's Hungarian Dictionary9,093 users -
Australian English Dictionary for Mozilla applications.8,836 users -
Adds some tools to import and export folders and messages6,118 users -
Lithuanian spellchecking dictionary for Mozilla applications. Included by default in Lithuanian localized versions of Mozilla software.3,381 users
Top Rated See all »
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Use SeaMonkey as a standalone e-mail client. Set up a default browser for links opened from Mail & Newsgroups.366 users -
Flash player plugin - unofficial xpi repack for 32bit browsers.
Use when official plugin installer is not suitable.
All binary files are copyrighted by their authors and distributed for free.42 users -
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".750 users
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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.1 user
Recently Added See all »
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This extension allows you to manually sort (order) your folders in the folder pane of SeaMonkey Mail or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.23 users -
Select sender mail address based on the recipient and reply with the same address14 users
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Lightweight add-on that automatically copies any highlighted text to clipboard.5 users
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With MyAdFilter, free content creators propose you only one ad. Apart from those, as your usual ad-blocker, MyAdFilter disables all ads.3 users -
XDM integration module for Firefox on Linux and Mac1 user
See all 171 extensions in Miscellaneous »
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