Up & Coming Extensions

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HTTPS Everywhere

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Rated 5 out of 5 stars (29)
31,974 users

P7MON

Abilita la gestione alternativa degli allegati P7M

Not yet rated
1,166 users

LastPass Password Manager

LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

Rated 4 out of 5 stars (1,227)
535,818 users

Copy Pure Text

Allows to copy selected text as plain text by adding a 'Copy as Text' menu item to context menu.

Rated 4 out of 5 stars (15)
6,425 users

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 (1,862)
4,615,569 users

Forecastfox (fix version)

Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.

Now Available for: Firefox, Thunderbird and SeaMonkey!

Rated 5 out of 5 stars (138)
51,717 users

Close Proxy Authentication

Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.

Rated 5 out of 5 stars (2)
1,490 users

cacaoweb

Watch videos without limit

Not yet rated
1,957 users

Add-ons Manager Context Menu

Add more items to Add-ons Manager context menu.

Rated 5 out of 5 stars (32)
12,327 users

uBlock Origin No Restart

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (185)
266,424 users

All Menus Button No Restart

Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.

Rated 5 out of 5 stars (4)
2,013 users

Join-NG

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

Rated 5 out of 5 stars (2)
1,828 users

Télécommande Virtuelle Freebox Révolution V6/HD V5

Un clic sur l'icone de télécommande visible dans la barre des modules fait apparait une télécommande plus grosse en bas à droite de la fenêtre de Firefox. Celle-ci permet de piloter votre Freebox Révolution V6 ou HD V5.

Rated 5 out of 5 stars (2)
3,916 users

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 (199)
59,532 users

tzpush

Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.

Rated 4 out of 5 stars (11)
1,501 users

Return Receipt Toolbar Button

Allow you to add a Return Receipt button to mail compose window toolbar.

Rated 5 out of 5 stars (9)
5,780 users

Bookmark Toolbar Menu Button No Restart

Show the contents of the Bookmarks Toolbar in a drop down menu. This compresses the bookmark menu into one button that you can put on any toolbar you want to.

Rated 4 out of 5 stars (3)
1,883 users

Sharp Color Picker No Restart

A full featured color selector tool, to work with colors, and easily find the colors you want.

Not yet rated
1,618 users

Addressbooks Synchronizer

Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers

Rated 4 out of 5 stars (57)
33,681 users

Rai Smooth Streaming Player (raismth)

Rai.tv live channels, vod and replay contents w/o *light (Silverlight/Moonlight)

Rated 5 out of 5 stars (46)
5,457 users