Plug-ins are heart-beat of Firefox. selecting a right plug-in for your use is very difficult task here are 16 best book mark plug-ins for firefox that will help you to manage and share bookmarks easier.
Foxmarks Bookmark Synchronizer-If you use Firefox on more than one computer, you'll want Foxmarks. Install Foxmarks on each computer, and it works silently in the background to keep your bookmarks and (optionally) passwords synchronized. Foxmarks also keeps your data backed up and safe from computer failures. If you're away from your computer, Foxmarks allows you to access your bookmarks online by logging into my.foxmarks.com.
Fast Dial-- Fast Dial replaces blank tabs with a panel of thumbnails of your favorite sites.
All-in-One Sidebar- All-in-One Sidebar (AiOS) is an award-winning sidebar control, inspired by Opera's. It lets you quickly switch between sidebar panels, view dialog windows such as downloads, extensions, and more in the sidebar, or view source or websites in the sidebar.
Speed Dial - Direct access to your most visited websites( like that of chrome browser)
FoxSaver -Turns Idle FireFox into a ScreenSaver and Photo Viewer! Nice non-offensive pictures updated daily! Or your own pictures. FullScreen. Works great on Linux or dual monitors! Resouce Efficient! Support Media RSS. Recommend your own favorite pictures!
Yoono - Socialize your browser - Socialize your browser. Bring all your friends in your browser with Yoono and: - Follow what they are doing - Chat with them wherever they are - Discover and share any content by a single drag & drop Support: MSN, Yahoo, Gtalk, AIM, Facebook, MySpace, iMeem, Flickr, Twitter, Friendfeed… Yoono also synchronizes your bookmarks between your different computers
iMacros for Firefox - Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords.
Delicious Bookmarks - Delicious Bookmarks is the official Firefox add-on for Delicious, the world's leading social bookmarking service (formerly del.icio.us). It integrates your bookmarks and tags with Firefox and keeps them in sync for easy, convenient access.
ScrapBook- helps you to save Web pages and organize the collection.
Shareaholic - Social networking and link-sharing addicts rejoice! Shareaholic allows you to quickly share, bookmark, and e-mail web pages via a very wide array of your favorite web 2.0 social networking & bookmarking sites - such as Delicious, Digg, Facebook, Google Reader, MySpace, and StumbleUpon, without cluttering up your browser.
Smart Bookmarks Bar - Smart Bookmarks Bar extension comes right here by hiding bookmarks names and only showing icons. Bookmark names will be displayed on mouse over.
YouPlayer This is a must-have addon for all video-site fans! YouPlayer is a video player with playlist similar to Winamp. You may add/drag a video link into the playlist and watch it or download it. Currently supported sites: Google Video, MetaCafe, MySpace and YouTube. You may now even drag local files from hard drive into playlist and watch them!
Read It Later - Read It Later allows you to save pages of interest to read later. It eliminates cluttering of bookmarks with sites that are merely of a one-time interest.
NewsFox NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.
Google Bookmarks Button This extension adds a new button in the Firefox toolbar to manage the Google Bookmarks..
BlueOrganizer - BlueOrganizer understands the content of web pages and offers a smart-browsing experience: when looking at an address, find it on Google maps instantly, when reading a book review save it to your Amazon Wish List with a single click, or when looking at a movie add it immediately to your Netflix queue - and much more.