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Tabinta

Tabinta lets you insert tab characters in multi-line text input fields. The name itself is a shorthand for "Tab in Textarea"...

Rated 4 out of 5 stars (21)
874 users

Tabs Menu

Adds a Tabs menu to the main menu that lets you easily change between tabs.

Rated 4 out of 5 stars (29)
3,218 users

TabSubmit No Restart

Lets the user direct the submission of a form to a new tab or window. [Bug #17754]

Rated 5 out of 5 stars (14)
839 users

Tahoe Data Manager

Central access point to Cookies, Content Preferences, Permissions, Form Data

Rated 4 out of 5 stars (10)
450 users

Tamil to Sinhala Transliteration

Transliterate Tamil selected text in to Sinhalese. When click on that text full transliterated text display as popup.

Rated 5 out of 5 stars (3)
20 users

TaQuilla

Automatic tagging using Bayesian statistics

Rated 4 out of 5 stars (8)
359 users

TBTracer

Shows all of Thunderbird's human-readable network traffic.

Rated 4 out of 5 stars (9)
888 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)
4,177 users

text/plain

Treats selected plain text urls, and email addresses as links and adds options to the context menu on how to use...

Rated 4 out of 5 stars (13)
1,732 users

ThaiSEObar

แถบเครื่องมือของ ThaiSeoBar (PR, Dmoz, Google) เป็นเครื่องมือที่อำนวยความสะดวกสำหรับวิเคราะห์ SEO ของข้อมูลในเว็บไซต์อย่างรวดเร็วที่ซึ่งมีจุดประสงค์ให้เว็บมาสเตอร์เป็นผู้ใช้ นอกจากนี้ยังมีคุณสมบัติพิเศษสำหรับผู้ใช้ทั่วไปอีกด้วย
http://thaiseobar.com

Not yet rated
7 users

The Book of Mozilla, 15:1 in Japanese No Restart

The Book of Mozilla, 15:1 in Japanese

Not yet rated
87 users

Theme Font & Size Changer No 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.

Rated 5 out of 5 stars (140)
92,688 users

Themes Menu

Adds Themes menu to the Tools and Titlebar menus. Includes toolbar icon.

Rated 4 out of 5 stars (13)
21,168 users

TheRealURL

Get URL information: expand short URLs, get title and content type information without visiting the site.

UPDATE, AUG 2013: THIS EXTENSION IS NO LONGER SUPPORTED. The source is open - if you wish to take on the development, you're welcome.

Rated 3 out of 5 stars (7)
522 users

ThreadKey

Strike the 'T' key to sort messages by thread, strike the 'U' key to sort them unthreaded again, just like the 'G' key switches to Grouped By Sort view

Rated 4 out of 5 stars (23)
1,690 users

Thumbnail Zoom Plus

Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.

Rated 5 out of 5 stars (285)
139,726 users

Thunderbird Integration for JIRA

This is a plugin for Thunderbird 3.3+ which is able to create Atlassian Jira issues out of e-mails or add the content of an e-mail as a comment on an Jira issue.

Rated 3 out of 5 stars (13)
493 users

Thunderbird Pedophile Reporter

This add-on was created to allow anyone that is contacted by a suspected pedophile or suspected predator. This will gather the header information and send it to our servers to be reviewed by an investigator.

Rated 1 out of 5 stars (3)
27 users

ThunderBirthDay

Display birthdays from the Thunderbird addressbooks as events in Lightning.

Rated 4 out of 5 stars (79)
22,668 users

Tinderstatus

the status of Mozilla tinderboxen in the statusbar

Rated 3 out of 5 stars (1)
57 users