An automatically generated list of my OLD installed add-ons. NEW LIST HERE: https://addons.mozilla.org/en-US/firefox/collection/narcelio_filho
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).
The first and only download manager/accelerator built inside Firefox!
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.
The Web Developer extension adds various web developer tools to the browser.
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.
View HTTP headers of a page and while browsing.
A developer tool for interacting with web services and other web resources that lets you make HTTP requests, set the entity body, and content type. This allows you to interact with web services and inspect the results...
The same spellchecker shipped with the Brazilian version of Firefox.
Displays the Exif and IPTC data in local and remote JPEG images.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.