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WebODF No Restart

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.

Rated 5 out of 5 stars (5)
1,510 users

Join-NG

Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".

Rated 5 out of 5 stars (1)
1,053 users

Send Filter

This add-on allows you run your message filters automatically on outgoing messages after sending. In other words, it's a outgoing filter for thunderbird and seamonkey.

Rated 4 out of 5 stars (32)
4,613 users

Year view

Year view for calendar.

Rated 4 out of 5 stars (42)
4,111 users

SmartTemplate4

SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.

Rated 5 out of 5 stars (42)
15,446 users

XNote++

Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 and Seamonkey >= 2 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.

Rated 5 out of 5 stars (53)
19,649 users

Mail Redirect

Allow to redirect (a.k.a. "bounce") mail messages to other recipients

Rated 4 out of 5 stars (106)
28,262 users

Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (45)
43,677 users

SyncKolab

SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).

Rated 3 out of 5 stars (71)
7,813 users

Extension Auto-Installer No Restart

For extension developers: allows automatically adding or updating browser extensions, e.g. with command line tools.

Rated 5 out of 5 stars (10)
2,866 users

Tinderstatus

the status of Mozilla tinderboxen in the statusbar

Not yet rated
53 users

XULMine

Game based on Minesweeper by Robert Donner and Curt Johnson.

Not yet rated
8 users

Send without save

Send message without saving a copy

Rated 4 out of 5 stars (3)
523 users

Bitcoin Venezuela No Restart

Add-on to see the average price of Bitcoin and shortcut for Bitcoin Venezuela.
Currency money:
USD = USA
EUR = Europe
VEF = Venezuela
ARS = Argentina

Not yet rated
11 users

MDN Interface Documentation Generator

Generate MDN Interface Documentation from IDL files.

Not yet rated
19 users

SeaMonkey Update Server Cert HotFix

Adds the current Certificate used by the Official Update Server to SeaMonkey's acceptable list.

Not yet rated
39 users

BOINC Stats 2

Displays your Total and Recent Average Credits for BOINC distributed computing projects in the status bar.

Rated 5 out of 5 stars (1)
42 users

Password Exporter New 2014

Export and import your saved passwords.

Rated 1 out of 5 stars (1)
422 users

Tv program

It shows popular stations TV program in listings, alerts and bubble infos. It's only for Czech and Slovak TV stations.
Localization: sk, cs, hu, en

Rated 2 out of 5 stars (9)
201 users

Addons Manager Hilite No Restart

Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.

Rated 5 out of 5 stars (15)
877 users