!Firefox

by claudioif

8 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,755 reviews

2,661,358 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...

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 472 reviews

1,130,258 users

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

Web Developer by chrispederick

Rated 5 out of 5 stars 202 reviews

696,949 users

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

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,502 reviews

377,520 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!

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 327 reviews

176,584 users

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

Fast Dial by telega

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Experimental

Rated 3 out of 5 stars 2,445 reviews

187,114 users

Visual bookmarks for Firefox. (Works with all latest versions of Firefox)

WorldIP - Geo Add-on with Security Features by Alrond

Rated 5 out of 5 stars 112 reviews

49,192 users

Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter

Easy DragToGo by Sunwan

Rated 5 out of 5 stars 357 reviews

3,937 users

Note from Mozilla: This add-on has been discontinued. Try DragIt instead.

Allows you to open links in new tabs, and do more with drag and drop gestures easier.

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