Power User Pack

by IDenis

80 Add-ons in this Collection

Session Manager by Michael Kraft

Rated 4 out of 5 stars 458 reviews

267,597 users

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 380 reviews

219,831 users

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

Wappalyzer by Elbert Alias

Rated 4 out of 5 stars 107 reviews

79,311 users

Wappalyzer is a browser extension that identifies software on websites.

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,449 reviews

154,438 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.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 362 reviews

120,172 users

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

Tree Style Tab by Piro (piro_or)

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Experimental

Rated 4 out of 5 stars 1,246 reviews

104,002 users

Show tabs like a tree.

FEBE by Chuck_Baker

Rated 4 out of 5 stars 676 reviews

94,984 users

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

UnMHT by arai_a

Rated 5 out of 5 stars 229 reviews

95,151 users

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

Fast Dial by telega

Rated 3 out of 5 stars 2,557 reviews

100,686 users

Visual bookmarks for Firefox.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 347 reviews

122,612 users

Adds zoom and rotation functionality for images...

Webmail Ad Blocker by Jason

Rated 4 out of 5 stars 224 reviews

81,586 users

Expand your email area by blocking and removing ads on the right hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.

Reload Plus by bwProductions

Rated 5 out of 5 stars 85 reviews

17,579 users

Supercharge your reload button and hotkeys!

PDF Download by Nitro PDF Software

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Experimental

Rated 2 out of 5 stars 690 reviews

55,961 users

Use PDF Download to do whatever you like with PDF files on the Web. Regain control and eliminate browser problems, view PDFs directly in Firefox as HTML, and use the all-new Web-to-PDF toolbar to save and share Web pages as high-quality PDF files.

Html Validator by Marc Gueury

Rated 4 out of 5 stars 218 reviews

45,341 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

View Cookies by Edwin Martin

Rated 4 out of 5 stars 47 reviews

24,805 users

It adds a tab to the Page Info dialog box, which shows the cookies belonging to the current page.
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