Lifehacker Top 10 Must-Have Extensions for 2009

by James Joaquin

9 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,824 reviews

22,059,989 users

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,549 reviews

1,533,772 users

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

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 933 reviews

1,402,610 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,472 reviews

1,056,447 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.

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,502 reviews

376,651 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!

Better Gmail 2 by Gina Trapani

Rated 4 out of 5 stars 516 reviews

20,817 users

Add useful extra features to Gmail, like hierarchical labels, an unread message icon on your browser tab, file attachment icons, and more.

AutoCopy by Autocopy, Michael Lidman

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Experimental

Rated 4 out of 5 stars 519 reviews

28,877 users

Select text and it's automatically copied to the clipboard. Also pastes on middle click.

Automatic Save Folder by Cyan

Rated 4 out of 5 stars 125 reviews

4,556 users

This add-on will open the File Browser at the right location, using simple filters on the downloaded file.
The filters are based on filenames and hosted domain's name.

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