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Pentadactyl

Firefox for Vim and Links addicts.

Rated 5 out of 5 stars (139)
1,276 users

Toggle JS

A simple toolbar button to quickly toggle javascript between enabled or disabled.
A green shield is shown when javascript is enabled and a red shield is shown when it is disabled

Rated 5 out of 5 stars (18)
9,313 users

Screengrab (fix version) Requires Restart

Screengrab! saves webpages as images.
0.99 released!
New features: upload to internet

Rated 5 out of 5 stars (321)
123,318 users

Firepicker Requires Restart

Simple color picker plugin for Firebug.

Rated 5 out of 5 stars (56)
13,164 users

HostAdmin Requires Restart

Switch domain-ip mapping by a SIMPLE CLICK. In addition, DNS would be refreshed whenever your change host by HostAdmin or Manually.

Rated 5 out of 5 stars (26)
12,655 users

Flagfox

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...

Rated 5 out of 5 stars (683)
459,887 users

Extended Link Properties + (obsolete) Requires Restart

This application extends the Link Properties and displays File Size, Last Modified Date, Content Type and HTTP Header of a link...
Warning: developing discontinued, see least

Rated 5 out of 5 stars (14)
663 users

Toggle Mixed Active Content

An icon that toggles the preference of blocking mixed active content.
Preference Name: security.mixed_content.block_active_content

Rated 5 out of 5 stars (11)
4,661 users

JSONView

View JSON documents in the browser.

Rated 5 out of 5 stars (176)
108,911 users

Scroll Up Folder

Goes up a folder of a website.

Rated 5 out of 5 stars (31)
574 users

Full Web Page Screenshots (♥♥♥♥♥) Requires Restart

FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

Rated 5 out of 5 stars (488)
272,548 users

Domain Auction Metrics by DomCop

Domain Auction Metrics by DomCop provides domain metrics for GoDaddy Auctions, NameJet, SnapNames, DynaDot and Sedo. View Page Rank, Majestic Trust Flow, Moz Rank and Domain Authority, SimilarWeb Rank, SEMrush Metrics, Alexa Rank, Estibot metrics.

Rated 5 out of 5 stars (22)
1,014 users

Form History Control Requires Restart

Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.

Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.

Control for which webpage form history is saved or not.

Rated 5 out of 5 stars (90)
23,953 users

Cookies Manager+ Requires Restart

Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them.

Rated 5 out of 5 stars (69)
101,761 users

JS Print Setup Requires Restart

Client side Javascript printer settings.
This extension implements print setup from CS Javascript, similar of MeadCo's ScriptX ActiveX control for Internet Explorer.

Rated 5 out of 5 stars (27)
59,770 users

FlashDisable

Toolbar button that lets you disable and re-enable Flash with just one click.

Rated 5 out of 5 stars (57)
21,449 users

Juicy Studio Accessibility Toolbar Requires Restart

The toolbar enables developers to examine WAI-ARIA live regions roles and properties, examine data tables, and determine if the colour contrast is sufficient.

Rated 5 out of 5 stars (14)
1,825 users

FillForms Requires Restart

FillForm is a small extension to help you fill page forms.
Fill out current web all forms with a keyboard shortcut(Alt + Q).

Rated 5 out of 5 stars (35)
3,430 users

HideScrollbars

"Hide Scrollbars" add-on removes scrollbars for those who prefer mouse wheel and keyboard navigation.

Rated 5 out of 5 stars (21)
3,832 users

Stacked Inspector Requires Restart

Switch DOM Inspector to an over/under vertical layout instead of the usual side-by-side panel layout.

Rated 5 out of 5 stars (10)
371 users