Add-ons
⚙ ʣ “Developer”
by zoding
About this Collection
Extensions to use when writing, testing and debugging web applications. ⚙ ⁓zoding
21 Add-ons in this Collection
User Agent Switcher
by chrispederick
179 users
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
SQLite Manager
Live HTTP Headers
by Daniel Savard, Nikolas Co
43 users
View HTTP headers of a page and while browsing.
Mozilla Archive Format, with MHT and Faithful Save
by Christopher Ottley, Paolo Amadini
45 users
— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!
JavaScript Debugger
by James Ross, Robert Ginda, others
1,103 users
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.
Master Password+
by V@no
272 users
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows
Scriptish
by Erik Vold, Nils Maier, others
11 users
The greatest user script engine on the Internet (a fork of Greasemonkey).
WorldIP - Geo Add-on with Security Features
by Alrond
23 users
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
Execute JS
by Rudolf Noe
0 users
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
1 user
KeyManager Tool: Firefox Add-on for Key Generation, Certificate Enrollment, CRL Signing, and Identity and Authority Delegation
Markdown Viewer
by Thiht
3 users
Markdown document viewer.
Allows to visualize formatted markdown documents in browser.
Tiny JavaScript Debugger
by Patrick Brunschwig
69 users
TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.
XHTML Mobile Profile
by Gareth Hunt
1 user
Firefox does not natively support the mime-type application/vnd.wap.xhtml+xml. This is one of the possible mime-types for XHTML Mobile Profile. This addon adds support for this mime-type.
Extension Auto-Installer
by Wladimir Palant
3 users
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.
InspectorWidget
by Sailfish
7 users
Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
What are Collections?
Collections are groups of related add-ons that anyone can create and share.
Explore CollectionsTo create your own collections, you must have a Mozilla Add-ons account.
