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uBlock Origin

An efficient blocker. Easy on CPU and memory. New and updated filter list added.

Rated 4 out of 5 stars (4)
132 users
Added April 25, 2024

Manually sort folders for SeaMonkey Requires Restart

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.

Not yet rated
20 users
Added Feb. 10, 2022

Metal Lion Image Saver Requires Restart

Single-click access to common actions for images (e.g. saving, copying, printing)

Not yet rated
8 users
Added July 12, 2021

ExtExp Requires Restart

Export your extensions!

Not yet rated
4 users
Added Feb. 27, 2021

signTextJS

window.crypto.signText replacement

Not yet rated
2 users
Added Nov. 16, 2020

Custom Sender Address and Reply Requires Restart

Select sender mail address based on the recipient and reply with the same address

Rated 5 out of 5 stars (2)
17 users
Added March 31, 2019

AutoCopy_rebirth Requires Restart

Lightweight add-on that automatically copies any highlighted text to clipboard.

Rated 5 out of 5 stars (5)
7 users
Added March 8, 2019

Stay-Open Menu

Facilitates opening multiple items from the Bookmarks Menu and various other bookmark/history related dropdown menus.

Not yet rated
1 user
Added Dec. 6, 2018

MinimizeToTray Reanimated Requires Restart

MinimizeToTray Reanimated is an application mainly dedicated to Thunderbird to allow its minimization in the systray in one click. It is the update of MinimizeToTray Revived, which is not maintained anymore since the recent versions of Thunderbird.

Rated 4 out of 5 stars (140)
770 users
Added Sept. 12, 2018

PDF Viewer for SeaMonkey

A fork of PDF.js with support for SeaMonkey 2.49.x.

Rated 5 out of 5 stars (4)
334 users
Added March 15, 2018

Theme Font & Size Changer for ThunderBird

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.

Rated 3 out of 5 stars (100)
167 users
Added Nov. 14, 2017

Dark Background and Light Text (SeaMonkey)

Makes every page to have light text on dark background (exact colors are customizable)

Firefox version is here: https://addons.mozilla.org/firefox/addon/dark-background-light-text/

Rated 5 out of 5 stars (3)
75 users
Added Oct. 23, 2017

Autoplay Toggle NonRestartless Requires Restart

This extension performs the same function as Autoplay Toggle, but as a legacy overlay extension. This should work in cases where Autoplay Toggle doesn't. SeaMonkey and Pale Moon are supported.

Not yet rated
22 users
Added July 7, 2017

Composer Open In Requires Restart

Adds a toolbar button to Composer to open the current file in another editor or browser.

Not yet rated
10 users
Added May 2, 2017

fixedzoomthumb Requires Restart

Shows Desktop size image when you hover over a thumbnail .Works with many sites including Amazon, Facebook, Flickr, YouTube.

Rated 5 out of 5 stars (3)
1 user
Added April 18, 2017

Vault Shortcut Requires Restart

Adds a toolbar button that opens the LastPass Vault in an external browser.

Not yet rated
11 users
Added April 8, 2017

Addons Memory Usage - Button Requires Restart

Add toolbar button for about-addons-memory-pm

But not only, also provide shortcuts for :

- Free Memory (needs free memory button)
- Abouts list page (about:about)
- Plugins page (about:plugins)

github.com/intika/about-addons-memory-pm

Rated 2 out of 5 stars (1)
1 user
Added March 13, 2017

Library Exporter Requires Restart

IMPORTANT: This add-on is just for exporting ebooks from EPUBReaders private library. If you want to read ebooks, please install https://addons.mozilla.org/firefox/addon/epubreader/.

Rated 5 out of 5 stars (1)
1 user
Added March 4, 2017

techblocker

Search with Joy! Block Ads While Surfing!

Rated 5 out of 5 stars (3)
6 users
Added Feb. 24, 2017

Integrated Authentication for SeaMonkey Requires Restart

An extension that helps with enabling and managing NTLM (Windows pass-through) and other SPNEGO (integrated authentication) settings.

Not yet rated
3 users
Added Feb. 11, 2017