Web and Developer Tools
In the DOM Inspector,quickly navigate to the any elements
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.
Beta builds on versions page!
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
Open With Requires Restart
Quickly test out your web pages in Internet Explorer, Chrome, Safari, or Opera. Open With opens the current page in your other browsers with just one click. Add Open With to your menus, toolbars and developer toolbox today!
Open With Photoshop is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.
NoScript Security Suite Requires Restart Featured
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.
Addons Memory Usage - Button Requires Restart
Add toolbar button for about-addons-memory-pm
But not only, also provide shortcuts for :
- Free Memory (needs free memory button)
- Abouts list page (about:about)
- Plugins page (about:plugins)
CloudBleed, search have you visited affected websites recently by browser history.
Web Developer Requires Restart
The Web Developer extension adds various web developer tools to the browser.
Rewrite http response body using search & replace patterns
FoxyProxy Basic Requires Restart
FoxyProxy Basic is a simple on/off proxy switcher. More advanced features and configuration options are offered by FoxyProxy Standard.
FoxyProxy Standard Requires Restart
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
Sidebar Add Custom Tab Requires Restart
Adds an 'add custom tab' option to the Tabs drop-down menu of SeaMonkey's sidebar.
Stylish-Custom Requires Restart
custom additions to Stylish extension
Image Zoom (ugly fixes) Requires Restart
An ugly attempt at fixing Image Zoom
Screengrab (fix version) Requires Restart
Screengrab! saves webpages as images.
New features: upload to internet
Font Finder Requires Restart
FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
Nightly Tester Tools Requires Restart
Useful tools for the nightly tester.
DOM Inspector Plus! [dm] Requires Restart
Improved DOM Inspector! [dm version]. Box Model new layout & more data, see screenshot!. Horizontal scroll for Dom-Tree, and some more.
Inspects the structure and properties of a window and its contents.