Floweringmind

by Chris Kringle

19 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,829 reviews

2,045,421 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

LastPass Password Manager by LastPass

Rated 4 out of 5 stars 1,352 reviews

720,803 users

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

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 1,755 reviews

1,249,733 users

The first and only download manager/accelerator built inside Firefox!

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,599 reviews

796,542 users

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Web Developer by chrispederick

Rated 5 out of 5 stars 235 reviews

465,920 users

The Web Developer extension adds various web developer tools to the browser.

Flagfox by Dave G

Rated 5 out of 5 stars 655 reviews

494,360 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,556 reviews

318,206 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

Stylish by Jason Barnabe

Rated 4 out of 5 stars 817 reviews

458,547 users

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 309 reviews

258,534 users

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 352 reviews

135,203 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,418 reviews

183,332 users

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

Wappalyzer by Elbert Alias

Rated 4 out of 5 stars 102 reviews

75,657 users

Wappalyzer is a browser extension that identifies software on websites.

Personas Plus by Mozilla

Rated 3 out of 5 stars 931 reviews

294,357 users

Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.

Fast Dial by telega

Rated 3 out of 5 stars 2,516 reviews

112,547 users

Visual bookmarks for Firefox.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 215 reviews

51,104 users

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Online HTML 5 validation, you need 0.962
http://users.skynet.be/mgueury/mozilla
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