My Favorite Add-ons
132 Add-ons in this Collection
Make any pages' search functionality available in the Search Bar (or "search box")...
DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.
Adds an about:addons-memory page that details add-on memory usage
Scriptish by Erik Vold, Nils Maier, others
The greatest user script engine on the Internet (a fork of Greasemonkey).
Dead pages, broken links, the scourge of the internet. Powerhouse sites like Slashdot and Digg can bring a server to its knees. What do we do when a page is dead but we still want to see it? Call in the clerics, and perform a resurrection...
Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.
Expands the context menu's 'Search for' item into a list of installed search engines, allowing you to choose the engine you want to use for each search.
Markdown document viewer.
Allows to visualize formatted markdown documents in browser.
Install Browser Extensions straight from GitHub Repositories
Suspends background old tabs automatically to save memory usage.
Custom Buttons by Yan, cubegm, others
Gives a possibility to create custom toolbarbuttons...
Offers the possibility to display documents in browser window.