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QR Code Image Generator No Restart Nên dùng

Create a QR Code of the selected text or current URL. Customize image with different colors and sizes.Use CTRL-SHIFT-Q to quickly see the QR Code. Also possible to create a QR Code from free text within Firefox. Works completely offline!

Rated 5 out of 5 stars (14)
15.849 users

ColorfulTabs Nên dùng

The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color and makes them easy to distinguish while beautifying the overall appearance of the interface. For Seamonkey & Flock. An essential. F...

Rated 4 out of 5 stars (966)
256.299 users

Clear Console Nên dùng

One click to clear your cache, cookies, history, html5/local storage, http logins, all of them or restart your browser with/without notifications.

Rated 4 out of 5 stars (57)
37.235 users

WebRank SEO Toolbar Nên dùng

A toolbar that gives Google Pagerank, Alexa, Compete and Quantcast Rank, pages indexed and backlinks in Google, Bing and Yahoo. Bookmark webpages at PickMeWeb.com, view similar websites at SimilarSites.com. Delicious, Digg and Tweet Count.

Rated 4 out of 5 stars (62)
24.855 users

Nimbus Screen Capture - editable screenshots No Restart Nên dùng

Screen capture Web Page, selected region or whole browser window, edit screenshots and save the images to Local File or Google Drive. Edit screenshots in a very user-friendly interface with the different tools.

Rated 5 out of 5 stars (125)
87.355 users

Classic Toolbar Buttons No Restart Nên dùng

'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions on Windows.

Beta builds on versions page!

Rated 5 out of 5 stars (139)
42.392 users

FireFTP Nên dùng

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Rated 4 out of 5 stars (911)
639.440 users

User Agent Switcher Nên dùng

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Rated 4 out of 5 stars (234)
418.163 users

Easy Copy Nên dùng

Copy links to a page with one click, ready to paste anywhere else, eg. emails, blogs, forums and Twitter. Copy a single page, all open tabs or all links on a page.

Rated 5 out of 5 stars (22)
23.626 users

BetterPrivacy Nên dùng

Remove or manage a new and uncommon kind of cookies, better known as LSO's.The BetterPrivacy safeguard offers various ways to handle Flash-cookies set by Google, YouTube, Ebay and others...

Latest updates: See bottom link 'version history'!

Rated 5 out of 5 stars (422)
627.065 users

FoxyProxy Standard Nên dùng

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Rated 4 out of 5 stars (332)
347.693 users

The Addon Bar (Restored) No Restart Nên dùng

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

Rated 5 out of 5 stars (252)
140.912 users

Ghostery No Restart Nên dùng

Protect your privacy. See who's tracking your web browsing and block them with Ghostery.

Rated 5 out of 5 stars (1.103)
1.451.114 users

NoScript Security Suite Nên dùng

Lớp bảo mật tốt nhất mà bạn có thể dùng trong một trình duyệt web!
Cho phép các nội dung hoạt động chỉ được chạy trên những trang mà bạn tin tưởng, và bảo vệ bạn chống lại các cuộc tấn công XSS và Clickjacking.

Rated 5 out of 5 stars (1.458)
2.280.760 users

iMacros for Firefox Nên dùng

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

Rated 4 out of 5 stars (368)
319.451 users

Empty Cache Button Nên dùng

Cache clearing made easy. One click.

Rated 4 out of 5 stars (81)
68.216 users

Font Finder Nên dùng

FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.

Rated 4 out of 5 stars (64)
33.373 users

Advanced Cookie Manager Nên dùng

A must have tool for Web Developers and Testers to Manage and monitor web cookies.

Features List:
Add
Delete
Modify
Export / Backup
Import / Restore
Monitor cookies

Available in English, French, Spanish, German and Italian languages.

Rated 4 out of 5 stars (28)
39.283 users

Disconnect Nên dùng

Make the web faster, more private, and more secure.

Rated 4 out of 5 stars (136)
258.878 users

Rainbow Color Tools Nên dùng

Color tools for web development.

Color picker and eyedropper + saving colors and trying out colors with drag and drop.

Rated 5 out of 5 stars (90)
41.319 users