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Text Link

Allows URI texts written in webpages to be loaded by double clicks.

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159 259 uživatelů

Enigmail Doporučené

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

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142 692 uživatelů

CompactHeader Doporučené

Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. For Thunderbird 36 and older use version 2.0.9 (see version history)

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138 749 uživatelů

Bluhell Firewall Nevyžaduje restart

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

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133 728 uživatelů

JavaScript Debugger

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

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131 303 uživatelů

DOM Inspector

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

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130 295 uživatelů

Toolbar Buttons Nevyžaduje restart

Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.

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124 727 uživatelů

X-notifier (for Gmail,Hotmail,Yahoo,AOL ...)

Notifier for gmail, yahoo, hotmail, aol and more webmails.
X-notifier(aka WebMail Notifier) checks your webmail accounts and notifies the number of unread emails...
Supports : gmail, yahoo, hotmail, POP3/IMAP, facebook, twitter and more

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101 834 uživatelů

ReminderFox

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

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93 672 uživatelů

Manually sort folders

This extension allows you to manually sort (order) your folders in the folder pane of Thunderbird or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.

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91 508 uživatelů

Saved Password Editor

Adds the ability to create and edit entries in the password manager.

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87 367 uživatelů

Theme Font & Size Changer Nevyžaduje restart

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.

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85 437 uživatelů

Signature Switch Doporučené

Switch the signature on/off or choose a new one from your predefined set...

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82 830 uživatelů

UnMHT Nevyžaduje restart

UnMHT umožňuje prohlížet soubory webových archivů MHT (MHTML) a ukládat celé webové stránky, včetně textu a grafiky, do jednoho souboru.

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79 797 uživatelů

Quicktext

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

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73 576 uživatelů

Custom Buttons

Gives a possibility to create custom toolbarbuttons...

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71 787 uživatelů

AutoProxy

Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.

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71 388 uživatelů

Google Contacts

Access to Google contacts and synchronize them with Thunderbird address books.

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70 550 uživatelů

ShowIP

Show the IP address of the current page in the status bar. It also allows querying custom information services by IP (right click) and see location and avaiable vouchers for shopping sites. Additionally you can copy the IP address to the clipboard.

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69 846 uživatelů

FoxClocks

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.

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68 808 uživatelů