Web and Developer Tools
'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!
Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
Link Properties Plus Requires Restart
Provides extended link properties: size of linked file, last modified time, etc.
PrefBar Requires Restart
Console² Requires Restart
WorldIP - Geo Add-on with Security Features Requires Restart
Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter
Sync engine for Stylish with backup / restore facility.
Dafizilla Table2Clipboard Requires Restart
Mozilla applications allow to select rows and columns from a table simply pressing Control key and picking rows/columns with left mouse button.
The selection can be copied to clipboard but the original table disposition is lost making ugly results wh...
InspectorWidget Requires Restart
Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.
EmotiConverter Requires Restart
Post your best emoticons of the easiest and fastest way.
DOM Inspector Requires Restart
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 a new page that shows add-on memory usage
In the DOM Inspector,quickly navigate to the any elements
Shows source comments for advanced application preferences in about:config
BBCode Requires Restart
Adds BBCode, HTML, XHTML & Symbols formatting to the context menu for forums.
Linkification Requires Restart
Converts text links into genuine, clickable links...
HttpFox Requires Restart
An HTTP analyzer addon for Firefox
Live HTTP Headers Requires Restart
View HTTP headers of a page and while browsing.