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Lightning Nên dùng

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 (1.617)
1.157.452 users

Element Hiding Helper for Adblock Plus No Restart

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

Rated 5 out of 5 stars (362)
989.208 users

Personas Plus

Các "lớp da" miễn phí, dễ dàng cài đặt cho Firefox. Chọn từ hơn 60.000 thiết kế thú vị, bao gồm cả hình ảnh của Harry Potter. Hãy tham gia cùng 8 triệu người trên khắp thế giới - những người đang tự hỏi: "Hôm Nay Trình Duyệt Của Mình Sẽ Mặc Gì Đây?"

Rated 3 out of 5 stars (876)
771.106 users

Provider for Google Calendar

Allows bidirectional access to Google Calendar

Rated 4 out of 5 stars (504)
304.218 users


Adds some tools to import and export folders and messages

Rated 4 out of 5 stars (79)
277.527 users

MinimizeToTray revived

Minimizes windows into the system tray.

Rated 5 out of 5 stars (236)
274.781 users

JavaScript Debugger

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

Rated 4 out of 5 stars (48)
248.223 users

Extra Folder Columns Nên dùng

This extension is for those TB3 users who want the multiple-columns view that TB2 allowed

Rated 4 out of 5 stars (168)
217.475 users

SQLite Manager

Manage any SQLite database on your computer.

Rated 5 out of 5 stars (52)
211.579 users

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.

Rated 5 out of 5 stars (53)
157.333 users

Toolbar Buttons

A button pack for Firefox, Thunderbird and Sunbird

Rated 4 out of 5 stars (299)
147.108 users

MR Tech Toolkit

(Formerly Local Install) The primary goal of this extension is to provide the tools needed to install and manage extensions and themes locally and tons of other features.

Note: With Toolkit 6.0 Auto Archiving is fully working in Firefox 2.0 and temp...

Rated 4 out of 5 stars (133)
138.219 users


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 (280)
104.987 users

Signature Switch Nên dùng

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

Rated 4 out of 5 stars (141)
93.382 users

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 (182)
89.546 users

Exif Viewer

Displays the Exif and IPTC data in local and remote JPEG images.

Rated 4 out of 5 stars (79)
83.318 users


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

Rated 5 out of 5 stars (217)
74.697 users

Google Calendar Tab

Adds the Google Calendar web interface as a new tab directly into Thunderbird. Creating and viewing events works just as it would in a browser like Firefox

Rated 4 out of 5 stars (67)
63.801 users

Nightly Tester Tools

Useful tools for the nightly tester.

Rated 4 out of 5 stars (182)
59.976 users

WiseStamp – Giúp bạn điền chữ ký thư điện tử

Ứng dụng WiseStamp trên Firefox cho phép chèn chữ ký thư điện tử của bạn trên bất kỳ dịch vụ thư điện tử mạng nào (Gmail, Yahoo Mail, AOL, Hotmail, Google Apps …) Dễ dàng tuỳ chỉnh, bao gồm IM & các hồ sơ xã hội…

Rated 4 out of 5 stars (281)
50.905 users