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Thumbnail Zoom Plus Requires Restart

Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.

Rated 4 out of 5 stars (397)
4 users

Swedish Dictionary

Swedish spell-check dictionary.

Rated 5 out of 5 stars (22)
6,577 users

Google.de

Google Deutschland

Rated 3 out of 5 stars (13)
296 weekly downloads

Danish Dictionary for the Spell Checker

Danish dictionary for Firefox, Thunderbird and other Mozilla products.

Rated 3 out of 5 stars (25)
4,080 users

Live HTTP Headers (clone)

View HTTP headers of a page and while browsing.

This is an unofficial "Live HTTP headers" clone, mainly to fix the Replay feature!

Rated 4 out of 5 stars (17)
2 users

Dogpile

Dogpile.com Web Search

Rated 5 out of 5 stars (35)
284 weekly downloads

Diccionario de Español/Chile

Diccionario corrector ortográfico de Español/Chile

Rated 5 out of 5 stars (4)
2,713 users

English - Greek Spelling dictionary

English-Greek spell-checking dictionary for Firefox, Mozilla thunderbird and Seamonkey mail for easier spell checking in bilingual text.If you need better spelling results try the respective stand-alone...

Rated 4 out of 5 stars (74)
3,702 users

DuckDuckGo Deutsch

Die datenschutzfreundliche Suchmaschine DuckDuckGo in der Region Deutschland.

Rated 5 out of 5 stars (4)
267 weekly downloads

YouTube (SSL)

YouTube is the world's most popular video sharing website. This search bar extension utilizes SSL to protect searches between You and YouTube.

Rated 5 out of 5 stars (9)
266 weekly downloads

Google - No Country Redirect

Google Search without Country Redirect

Rated 5 out of 5 stars (18)
265 weekly downloads

IMDB

The Internet Movie Database.

Rated 4 out of 5 stars (42)
262 weekly downloads

Online TV

Search for up to 1000 online TV channels

Rated 4 out of 5 stars (20)
262 weekly downloads

谷歌中国

安全谷歌,你懂得。中国区专用.

Rated 5 out of 5 stars (1)
259 weekly downloads

Wikipedia

The incredible free encyclopedia.

Rated 4 out of 5 stars (48)
257 weekly downloads

Complete YouTube Saver Requires Restart

Download YouTube videos in various formats including 1080p, 4K etc (DASH formats). Convert audio track from videos to MP3 or WAV, or save audio in native format (Ogg, AAC/M4A, MP3, OPUS). Save YouTube page, video, comments and subtitles to one folder

Rated 4 out of 5 stars (185)
108 users

Toolbar Buttons

Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.

Rated 4 out of 5 stars (372)
307 users

Dorando keyconfig Requires Restart

A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)

As of version 2016.2, Custom keys (using custom JavaScript) work again!

Rated 5 out of 5 stars (66)
244 users

Arabic spell-checking dictionary

Arabic spell-checking dictionary for Firefox 3 and Thunderbird 3 from Ayaspell.

Rated 4 out of 5 stars (43)
660 users

United States English Spellchecker

This dictionary is no longer maintained. Use this dictionary instead.

Rated 4 out of 5 stars (207)
4,708 users