FireFox web development plugins

I want to share with you web development plugins for Mozilla Firefox.
I will be short :)
The most common plug-ins for Web Develop, in my view are:

1. Firebug - many things can be made by editing CSS directly to the clatter of traffic and speed of execution of the page
2. Web Developer - allows the exclusion of Cache, Java, JavaScript, visually showing the image sizes, shapes and many many things.
3.  MeasureIt - Allows you to directly measure the tip izgeneriranata page size of an element (terribly convenient for cutting design:))
4.  ColorZilla - Color Picker Yee all know what: P

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