Customize your bookmarks bar with Roomy Bookmarks Toolbar. This add-on adds a lot of little tweaks to your bookmarks toolbar that you might have right under your awesome bar and general browser navigation controls. It comes highly rated and packed full of Firefoxy goodness.
Weather Now
Need a better weather add-on for Firefox? With Weather Now you will immediately see the weather condition at you current location or any other place you add. It is a simple and straight forward weather add-on for Firefox.
YouTube Video and Audio Downloader
YouTube Video and Audio Downloader downloads YouTube videos (using Firefox download manager) in all available formats (FLV, MP4, WebM, and 3GP) with video quality of your choice. It also contains a pure JavaScript library to extract the ORIGINAL audio file out of FLV videos. It also shipped with an offline tool to extract audio files out of FLV videos.
Double Click Closes Tab
The fastest (yet safe) add-on to close tab using mouse only! Close any tab by double clicking the tab. Close current tab by triple click anywhere on the page. Optionally middle click or double right click on page to close tab.
PickMe Web
Tried PickMe Web? It saves your web history, your favorites, create simple bookmarks. Want everyone to know your great find, share with the world what you have discovered. Learn what others are viewing, the recent trends. Explore the world, from the view of your friends. Do it all with PickMe Web!
Twitter Disconnect
Twitter is notified whenever you visit one of the more than 20 percent of sites on the web that include Twitter widgets. Turn off the flow of your data to them! Twitter Disconnect blocks all traffic from third-party sites to Twitter servers but still lets you access Twitter itself.
Memonic Web Clipper
Allows you to save relevant parts out of any website and share and discuss them with your friends and much, much more. Keep more than just links: Save the essential content snippets and use them on any computer or mobile. Memonic combines the advantages of bookmarks with your private online notebook. For free.
Imgur Uploader
Imgur Uploader allows you to easily upload images that you stumble across on the web to Imgur, via a simple right click menu. It also allows you to share them out to your favorite social media sites instantly, and upload screenshots of webpages.
PopVideo
PopVideo takes an ordinary video embedded on a web page, and pops it out of the page, allowing you to resize and move your video around the page. Why be a sucker and watch a small, sad video stuck in the middle of a page when you can POP it out and live the big cinema video life?
YouTube Smart Pause
Want YouTube to pause your videos automatically? YouTube Smart Pause automatically pauses currently playing videos on YouTube once you leave the page and resumes playback as soon as you return. This is a simple and clean solution to a problem that I know a lot of YouTube users have.
