36 Add-ons in this Collection
Blocks annoying video ads on YouTube, Facebook ads, banners and much more.
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
Collector's Note Pop up blocker and stuff
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
Collector's Note Download web videos, youtube on your pc!
Firebug by Joe Hewitt, Jan Odvarko, others
DownThemAll! by Nils Maier, Federico Parodi, others
The first and only download manager/accelerator built inside Firefox!
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
• Green – The site is trusted
• Yellow – Be cautious
• Red – Online threats detected
Collector's Note Web of Trust, alerts from bad sites!
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
Collector's Note Awesome for photoshop users, artists and web designers!
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29+ (Windows / MacOSX / Linux).
All builds & changelogs on versions page!
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
Collector's Note Fast pixel measurement on screen!
FVD Speed Dial - Speed dial button, Online Synchronization, New Tab Start Page, Organize bookmarks, Custom backgrounds, custom dials, organized groups, most visited dials.
Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!
Collector's Note Register at Xmarks to use your bookmarks everywhere!
View and manage downloads from a tidy statusbar
This is a new life in Firefox 26+ for old well-known addon Download Statusbar
New Features: Replace Downloads Library page.
Now you have full control of your downloads history!
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.
Collector's Note Helps you save sessions and tabs!