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Highlights tags that have the attributes you are looking for
Open a website in the Internet Explorer, Safari, Chrome and Opera with one click.
Add a checkerboard background on Firefox view image pages to help show image transparency.
Shrinks long URL with TinyURL.
(Is now Inline Code Finder, an updated version with more options:
SEM Tools automates the manual, tedious tasks of running a PPC campaign so that you can do what you are good at... marketing and analysis.
Subtile is a highly customizable extension to allow people without mozilla development knowledge to create their own (sub)extension, limited to a menu attached to a toolbar button.
This wonderful SEO extension provides you the technical information required to beat your competitor websites in serps.It gives you backlinks number, indexed pages, keyword occurences on the page, page rank, all in anchor, all in title and all in...
RDF (Resource Description Framework) is a model for storing graphs of information. This is a tool for exploring the structure of a RDF...
Validates HTML documents using the CSE HTML Validator engine for Windows. Requires CSE HTML Validator for Windows. The lite edition is available for free at http://www.htmlvalidator.com/li...
Lympha No Restart
A basic add-on. Gets rid of a current site's cookies. Repository: https://github.com/MARNUTUX/lympha-cookies
Github Time Travel No Restart
Browse commits by date on Github
Displays xml responses with View > Page Style > Monospace.
Whois it No Restart
Lightweight no restart whois lookup addon. Get all Whois information on visited URL with single click.
A tool to perform basic checks on web and DAV servers.
A general-purpose inspector for all Mozilla toolkit applications.
Timetracker by 7WebPages No Restart
Track time for trello with start/stop button