All Time Favorits

by Jans

8 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,813 reviews

20,108,530 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).

Ghostery by Ghostery

Rated 5 out of 5 stars 1,262 reviews

1,441,799 users

Increase your browsing privacy, protection, and speed.

SearchWP by Georges-Etienne Legendre, Robert Katić, others

Rated 5 out of 5 stars 143 reviews

20,425 users

Jump-to-word buttons and highlighting for the search box content

United States English Spellchecker by jooliaan

Rated 4 out of 5 stars 159 reviews

464,395 users

United States English Spellchecker for Firefox, Thunderbird and SeaMonkey by Kevin Atkinson and Geoff Kuenning.

To enable, right-click in a multi-line text box, select "Languages", then "English (United States)".

Update Scanner by sneakypete81

Rated 4 out of 5 stars 212 reviews

26,868 users

Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.

Perspectives by perspectives-cmu, dschaefer

Rated 4 out of 5 stars 45 reviews

5,175 users

Connect securely to https websites by checking certificates with network notaries. See http://www.perspectives-project.org

Update Notifier by Todd Long

Rated 5 out of 5 stars 180 reviews

7,488 users

Note from Mozilla: This add-on has been discontinued. Try Add-on Update Checker instead.

Notifies you when updates are available for your extensions and themes.

TagSifter by chiisaitsu

Rated 4 out of 5 stars 135 reviews

98 users

Firefox 3 lets you tag your bookmarks, but it doesn't give you a great way to browse your bookmarks by their tags. TagSifter tries to. Select a group of tags in the sidebar or menu, and TagSifter shows you all the related tags and bookmarks. Or searc...

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