Boingle
Boingle is social annotation extension. With the Boingle toolbar for Firefox, we can add our own comments to any web page. The result is a simple, unassuming link left in each page that allows other Boinglers the opportunity to read our comments and add their own. download
PONG! Multiplayer
PONG! Multiplayer is an online Multiplayer gaming extension which we can Play against people from all around the world. It connects to our opponent through the port 10997 and 10998. It also integrated with a full blown chat application. To chat with everyone in the Multiplayer lobby, or just with our opponent while playing a game. We can fully customize color schemes and add sound effects, and the option to disable them. download
Raed Tihs!
Scrambles all text on the current tab's page, but we will still be able to read it. This is a simple demonstration of the theory that letter-order within a word has no impact on readability, beyond the first and last letters. download
Gmail Skins
Gmailskins extension helps us to change the colour/skin of our inbox. It also integrate our google homepage alongside our inbox. This allows you to view weather reports, rss feeds, news headlines, flickr recently added, google calendar module etc from our inbox. download
Tab Effect
Adds 3D tab effects when we move from one tab to another tab. It uses DirectX 8. download
Anchorun
Anchorun is a lazy way to traverse the web. While we are browsing a page, click on the anchorun icon on the toolbar, and look the browser surfing by itself loading a random link from the current page, and then another from the next page. download
PictureThis
PictureThis, pull up pictures of any word or words we highlight on a webpage. A word is worth a thousand images as we will see when we highlight a word or words on a page then use PictureThis to see what Google Images sees. It's a whole new way of adding instant context to the web. download
Splash
Adds a splash screen to most Mozilla. We can upload our images to show in the splash and can also specify the amount of time the splash needs to be shown. download
Full Screen Homestar Runner
Make all of homestarrunner.com cartoons fill our browser window. download
Daily Dilbert
Daily Dilbert, adds little icon to statusbar that popup "Dilbert's strip of the day" if clicked. Preferred language (en,es,de,cz,pl) can be choosen from the context menu. download
Froggr
Froggr is a simple clone of the classic Frogger game. download
Confuscator!
Confuses our text message a tad, by randomizing the letters in the selected words, so that only the first and last letters are kept in place. download
FoxyQuotes
FoxyQuotes, shows our favorite movie quotes. download
AutoBrowse
Enter any search-word and any search-engine [default is google.de] and AutoBrowse will surf the net for us. download
FlickrFox
Browse and search flickr photos in a sidebar. Flickrfox provides an easy way for Flickr group administrators to monitor their group photo pools. download
AutoSlideshow
AutoSlideshow lets us to view slideshows of images of web pages or images linked to from web pages. This is mainly useful for viewing images of a page with no possibility for image browsing. download
Mood Tap
Mood Tap taps the world's mood and displays it in the status bar. Let the world know how we are feeling. It all adds up to a global mood. download
OfficePoltergeist
OfficePoltergeist is a prank extension, which allows us to play spooky sounds, load new web pages, and make windows shake, send popup alert messages, and replace any given word on a web page with another word. download
STOP in the name of love!
It is the brand new replacement for our stop button. Simply install, right click on the stop icon and choose `customize`, drag our old stop button into the window, drag the heart shaped icon out and we will all be loaded up and ready to go! download
QuickChat
QuickChat is an extension that is designed to allow us to chat about anything on any website with the users that are actively browsing that site. download
Bork Bork Bork!
Bork Bork Bork! has the ability to "bork" and/or white list URLs or message senders based on regular expression patterns. It can also be used to completely block undesirable URLs from ever loading within web pages or messages such as images, Flash, applets, scripts, etc. download
Any interesting Firefoxextensions left out ?
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