Pro Developer

by JamesWilson

  • Updated Feb. 23, 2017

About this Collection

A collection of developer addons for professionals.

5 Add-ons in this Collection

DownThemAll! by Nils Maier, Federico Parodi, others

Download Now

Rated 4 out of 5 stars 2,899 reviews

272 users

The first and only download manager/accelerator built inside Firefox!

Live HTTP Headers by Daniel Savard, Nikolas Co

Download Now

Rated 4 out of 5 stars 216 reviews

45 users

View HTTP headers of a page and while browsing.

JavaScript Debugger by James Ross, Robert Ginda, others

Download Now

Rated 4 out of 5 stars 52 reviews

1,164 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.

Validaty by gemal

Download Now

Rated 3 out of 5 stars 6 reviews

1 user

One Click Validator. Provides you a button to validate a page using a validator like w3c or another user defined

MR Tech Toolkit by mrtech

Download Now

Rated 4 out of 5 stars 134 reviews

1 user

(Formerly Local Install) The primary goal of this extension is to provide the tools needed to install and manage extensions and themes locally and tons of other features.

Note: With Toolkit 6.0 Auto Archiving is fully working in Firefox 2.0 and temp...

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections