
Firefox the most popular browser on the web and also my favourite, and I am like addicted to the Net, when there’s nothing to do, I am either surfing the net or Blogging, I really love working on firefox than on any other browser, the two main big reasons, it allows you a lot of customizations than any other browsers and the Addons 
In this post I am writing about some Firefox Addons, that would be useful to web developers, System Administrators, and also to other Surfers who love surfing the net and downloading.
Firebug: Its already popular among the web developers using Firefox. Its gives you a lot of editing and debugging features.
- You can inspect and edit HTML.
- You can optimize i.e. make changes to the CSS of the web page.
- You can monitor the amount of time the page takes to load, and firbug can break it down to file-by-file to debug the loading time.
- You can debug Javascript.
- You can easily find the errors in your Javascript, CSS and XML pages.
- Firebug helps you find DOM objects quickly and then edit them on the fly.
- Firebug gives you a good ol’ fashioned command line for JavaScript.
- Firebug gives you a set of powerful logging functions to help you debug your Javascript.
Click to Install Firebug
Firequery: A collection of Firebug enhancements for jQuery.
- jQuery expressions are intelligently presented in Firebug Console and DOM inspector.
- elements in jQuery collections are highlighted on hover.
- jQuerify: enables you to inject jQuery into any page.
Click to Install FireQuery
Yslow: It analyzes web pages and why they’re slow based on Yahoo!’s rules for high performance web sites.
- Grade View To view an analysis of the page’s performance, choose the Grade tab or click the page’s letter grade in the status bar at the bottom of the page.
- Components View To display information about the page’s components, choose the Components tab. The Components View displays all the components present on the web page. You might look at this view, for example, to see which components could be gzipped to improve performance.
- Statistics View To view statistics about the web page, choose the Statistics tab. This view provides a summary of the total number of HTTP requests and the total weight of the page in kilobytes as well as page weight analysis for both Empty Cache and Primed Cache perspectives.
- JSLint gathers all external and inline JavaScript from the current web page, submits it to JSLint, a JavaScript verifier, and opens a separate window with a report about problems with the page’s JavaScript. The report includes approximate locations within the source of the problem code.
- ALL JS collects all external and inline JavaScript from the page and displays the scripts in a separate window. You might want to use this tool to check which scripts the page actually uses and whether the page is pulling them in correctly.ALL CSS collects all the inline and external stylesheets on the page and displays them in a separate window.
- ALL SMUSH.IT If you click on All Smush.it, Smush.it will be run on all the image components on the page. This tool will tell you which images can be optimized and will create a zip file with the optimized images.
Click to Install Yslow
CodeBurner: Provides searchable reference information and code examples for HTML and CSS. text-based search that matches element, attribute and property names as you type, and a DOM inspector for looking up objects that appear in the source code of any page.
Click to Install CodeBurner
CSS Usage: It is an extension for Firebug which allows you to scan multiple pages of your site to see which CSS rules are actually used in your site. Each time you press “Scan”, the CSS files that are included in the current page are shown with the number of times the rules has been found applied on your page before it.
Click to Install CSS Usage
Fire FTP: fire ftp is a simple FTP application present as an addon which can be added to the Firefox browser. There are various FTP applications available, but why go out of the browser, when you can have a simple and easy way to FTP through your Browser itself.
Click to Install FireFTP
Show IP: After covering on some addons for the web developers we come across to the System and server administrators. This is one of the addons that i use and also recommend and specially i would like to recommend it to all the server and system administrators who are in Web Hosting i.e. working with a Web Hosting provider. This simple little plugin shows the ip address of the current website in the status bar. also some more features that it provides, when you click on the ip address, you’ll get a popup list wherein you can get the DNS info of the website, and netcraft through which you can get to know the OS and which srever is being used, and you can also get the name of the web hosting provider hosting the website, and you can also copy the ip address to the clipboard.
Click to Install Show IP

Server Spy: After show ip this is another one of the addons that i use and also recommend. This is a simple little plugin, it shows the server being used for the website you have opened up. For Ex: if you open up my website pixelsspace.com in the firefox browser, you’ll see in the status bar, it will show you apache/2, this means that the wbe server being used for the website is apache version 2.
Click to Install Server Spy
DNSQueries.com Toolbar: Most of the you sys and server admins may already be familiar with websites like DNSstuff.com, network-tools.com, intodns.com, etc. this is one more similiar website. but i liked the website as it looks simple and soothing. and dnsqueries.com has launched their toolbar for Firefox. The toolbar gives instant access to Domain Health Check, Find IP Neighbors, DNS Query, Traceroute, Ping, DNS Traversal, IP geolocation, SMTP tester, Reverse DNS Lookup, Service banner monitor and many more.
Click to Install DNSqueries.com toolbar
Domain Details: This will add a small info icon to your statusbar, displays the current website’s server software and headers, IP address, location flag, and have quick links to Whois and other domain information. When a page fails to load, links are shown to check cache and server status.
Click to Install Domain Details
Downthemall: downthemall is a download manager and accelerator and my favourite addon, i have used a lot of download managers but this is my favourite, its get added inside your Firefox and also i have also noticed the differnce in downaload speed when using other download managers and downthemall, i truly say, downthemall is better than the others i have used so far. I truly recommend this addon to all the Surfers who do frequent downaloading.
Click to install Downthemall
Video DownloadHelper: download helper allows you to downaload videos and images from many websites like youtube, dailymotion, Porkolt, iFilm and others. You can also convert the downloaded videos to your required video format.
Click to Install Video DownloadHelper
VideoSurf Videos at a Glance: This addon gives you a summary of the video and related videos. See what the video is about before you watch it, without having to navigate away from the page. VideoSurf video summaries display selected thumbnails from the most important scenes in a video. you can easily find the video you want, avoid spam and jump to specific moments in a video.
Click to Install VideoSurf Videos at a Glance
Adblock Plus: This is one another addon i truly would recommend to everyone, whether it be Web Developers, sys admins, or simply Surfers. this is one of the addons that i have been using for a long time in my Firefox. This helps you to block the unwanted popup ads, images and any other stuff that you would like block. with this addon you can block the unwated ads and the images and save a lot of Bandwidth.
Click to Install Adblock Plus
If you know some more good add-ons which would be useful, please share it with me and everyone 