About this Collection
Add-ons for web development and extension development.
19 Add-ons in this Collection
View HTTP headers of a page and while browsing.
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.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
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
KeyManager Tool: Firefox Add-on for Key Generation, Certificate Enrollment, CRL Signing, and Identity and Authority Delegation
Markdown document viewer.
Allows to visualize formatted markdown documents in browser.
Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.
Developer Assistant by Ted Mielczarek, Gavin Sharp, others
A suite of tools for developers.
Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
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