Enhance Firefox functions: annotate, data mining, extract, +document format, new functions... For teachers, librarians... For webdev, bookmarks and accessibility, see my other collections
The first and only download manager/accelerator built inside Firefox!
Collector's Note With this you can tweak everything exempt the browser. All inpage hacks such as hiding chunks like 'ad-block' or adding HTML like linkify text links, save textareas, enable text selection on protected sites, zoom images, remove redirects, add direct download links to Youtube videos... ALL CAN BE DONE WITH GREASEMONKEY USERSCRIPTS !!! There's a huge collection of scripts at http://userscripts.org. There's also the Greasefire add-on that will list all related scripts to the current webpage your viewing.
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
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Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.
Collector's Note lots of tab options!
FireShot Webpage Screenshots captures webpage screenshot entirely (see demo: http://bit.ly/RlBQMV)
The screenshot can be quickly annotated and:
+ Saved as PDF/PNG/GIF/JPEG/BMP
+ Sent to clipboard
— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!
UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.
ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.
Collector's Note This is an incredibly well made and complete reminder/calendar. I advise this strongly to anybody who tends to lose track of time browsing.
Make any pages' search functionality available in the Search Bar (or "search box")...
Color tools for web development.
Color picker and eyedropper + saving colors and trying out colors with drag and drop.
UnPlug is an extension which lets you save video and audio which is embedded on a webpage - it's a video download tool.