Developer Tools

by Zulkarnain K.

19 Add-ons in this Collection

SQLite Manager by lazierthanthou

Manage any SQLite database on your computer.

Live HTTP Headers by Daniel Savard, Nikolas Co

View HTTP headers of a page and while browsing.

HttpFox by Martin Theimer

An HTTP analyzer addon for Firefox

Remote XUL Manager by Jorge Villalobos

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.

JavaScript Debugger by James Ross, Robert Ginda, others

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 78 reviews

13,992 users

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.

about:addons-memory by Nils Maier

Rated 4 out of 5 stars 149 reviews

7 users

Adds an about:addons-memory page that details add-on memory usage

Execute JS by Rudolf Noe

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

Key Manager by Subrata Mazumdar

KeyManager Tool: Firefox Add-on for Key Generation, Certificate Enrollment, CRL Signing, and Identity and Authority Delegation

Markdown Viewer by Thiht

Markdown document viewer.
Allows to visualize formatted markdown documents in browser.

Extension Auto-Installer by Wladimir Palant

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.

InspectorWidget by Sailfish

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

JavaScript Object Examiner by Chuck_Baker

هنوز رتبه‌دهی نشده است

0 users

Display JavaScript object methods and properties for any available scope.

Extension Test by Kris Maglione

A simple add-on for extension testers, especially AMO editors and developers who plan to submit their add-ons to AMO.
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