Miscellaneous

Subscribe

Lightning Featured

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

Rated 3 out of 5 stars (1,923)
9,020 weekly downloads

Session Manager No Restart

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

Rated 4 out of 5 stars (469)
3,054 weekly downloads

gContactSync

Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.

Rated 4 out of 5 stars (217)
2,340 weekly downloads

Diagnostics for Adblock Plus No Restart

Diagnostics tool for Adblock Plus, provides some insight into internal processes of Adblock Plus.

Rated 5 out of 5 stars (1)
1,914 weekly downloads

Send Later

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

Rated 5 out of 5 stars (69)
1,825 weekly downloads

UnMHT No Restart

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

Rated 5 out of 5 stars (224)
1,375 weekly downloads

PlayFlash 32bit

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.

Rated 5 out of 5 stars (2)
1,367 weekly downloads

QuickNote

A simple note-taking extension.

Rated 5 out of 5 stars (172)
1,341 weekly downloads

ChatZilla

A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.

Rated 4 out of 5 stars (127)
911 weekly downloads

FoxClocks No Restart

FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.

Rated 4 out of 5 stars (325)
849 weekly downloads

AutoProxy-ng

This is a fork of AutoProxy, which can run the latest version of Firefox.

Rated 5 out of 5 stars (8)
820 weekly downloads

Copy As Plain Text

Removes formatting from copied text.

Rated 4 out of 5 stars (59)
616 weekly downloads

Filter Uploader for Adblock Plus

DOES NOT BLOCK ADS! Don't install this add-on if you don't know what 'uploading' means!

This add-on Uploads the filters from your Adblock Plus installation to a FTP, HTTP, HTTPS server...

Rated 4 out of 5 stars (40)
613 weekly downloads

Mouse Gestures Suite

Mouse gestures for SeaMonkey & Firefox: navigate & execute commands using mouse gestures (with single mouse button) and rocker gestures (by pressing 2 mouse buttons). Also: scroll wheel navigation, page scrolling, tab scrolling.

Rated 5 out of 5 stars (28)
606 weekly downloads

AutoPager Fixed

AutoPager Fixed is a working version of AutoPager extension for Firefox 36+ (non-E10s mode) to autoload the next page(s) when you scroll pages.

ATTENTION: DISABLE THE ORIGINAL AUTOPAGER ADDON!

Rated 4 out of 5 stars (58)
566 weekly downloads

Copy Plain Text 2

Copies text without formatting

Rated 5 out of 5 stars (65)
423 weekly downloads

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 (49)
418 weekly downloads

Add-ons Manager Context Menu

Add more items to Add-ons Manager context menu.

Rated 5 out of 5 stars (35)
342 weekly downloads

PlayFlash 64bit

Flash player plugin - unofficial xpi repack for 64bit browsers. Use when official plugin installer is not suitable. All binary files are copyrighted by their authors and distributed for free.

Not yet rated
332 weekly downloads

Mail Redirect

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

Rated 4 out of 5 stars (128)
308 weekly downloads