<p>What Firefox add-ons do you use that are useful for programmers?</p>

[{'answer_id': 36413, 'author': 'Christian Oudard', 'author_id': 3757, 'author_profile': 'https://Stackoverflow.com/users/3757', 'pm_score': 2, 'selected': False, 'text': '<p>As far as web development, especially for javascript, I find <a href="http://getfirebug.com/" rel="nofollow noreferrer">Firebug</a> to be invaluable. <a href="https://addons.mozilla.org/en-US/firefox/addon/60" rel="nofollow noreferrer">Web developer toolbar</a> is also very useful.</p>\n'}, {'answer_id': 36414, 'author': 'Ubiguchi', 'author_id': 2562, 'author_profile': 'https://Stackoverflow.com/users/2562', 'pm_score': 0, 'selected': False, 'text': '<p><a href="https://addons.mozilla.org/en-US/firefox/addon/60" rel="nofollow noreferrer">Web Developer</a> for web development. <a href="https://addons.mozilla.org/en-US/firefox/addon/1730" rel="nofollow noreferrer">Scribefire</a> if you\'re a blogger-progammer</p>\n'}, {'answer_id': 36416, 'author': 'different', 'author_id': 3654, 'author_profile': 'https://Stackoverflow.com/users/3654', 'pm_score': 3, 'selected': False, 'text': '<p>I\'d also recommend the <a href="https://addons.mozilla.org/en-US/firefox/addon/60" rel="nofollow noreferrer">Web Developer</a> extension by Chris Pederick.</p>\n'}, {'answer_id': 36419, 'author': 'Danimal', 'author_id': 2757, 'author_profile': 'https://Stackoverflow.com/users/2757', 'pm_score': 5, 'selected': True, 'text': "<p>I guess it's silly to mention Firebug -- doubt any of us could live without it. Other than that I use the following (only listing dev-related):</p>\n\n<ul>\n<li>Console<sup>2</sup>: next-generation error console</li>\n<li>DOM inspector: as the title might indicate, allows you to browse the DOM</li>\n<li>Edit Cookies: change cookies on the fly</li>\n<li>Execute JS: ad-hoc Javascript execution</li>\n<li>IE Tab: render a page in IE</li>\n<li>Inspect This: brings the selected object into the DOM inspector</li>\n<li>JSView: display linked javascript and CSS</li>\n<li>LORI (Life of Request Info): shows how long it takes to render a page</li>\n<li>Measure IT: a popup ruler. </li>\n<li>URL Params: shows GET and POST variables</li>\n<li>Web Developer: a myriad of tools for the web developer</li>\n</ul>\n"}, {'answer_id': 36420, 'author': 'Flávio Amieiro', 'author_id': 802, 'author_profile': 'https://Stackoverflow.com/users/802', 'pm_score': 0, 'selected': False, 'text': '<p>For web developing I use the <a href="https://addons.mozilla.org/en-US/firefox/addon/60" rel="nofollow noreferrer">Web Developer Toolbar</a>, <a href="https://addons.mozilla.org/en-US/firefox/addon/2104" rel="nofollow noreferrer">CSS Viewer</a> <del>and <a href="https://addons.mozilla.org/en-US/firefox/addon/539" rel="nofollow noreferrer">MeasureIt</a>.</del></p>\n\n<p>But I\'m really not one of those who has a thousand of extensions to do everything. I like to keep things simple. </p>\n\n<p>EDIT: Thanks to <a href="https://stackoverflow.com/questions/36407/firefox-add-ons#36433">Dan\'s answer</a> I don\'t need MeasureIt anymore. Can\'t believe I\'ve never seen that! I guess I\'ll just have to pay more atention to this WebDeveloper toolbar.</p>\n'}, {'answer_id': 36433, 'author': 'Dan Herbert', 'author_id': 392, 'author_profile': 'https://Stackoverflow.com/users/392', 'pm_score': 1, 'selected': False, 'text': '<p>@Flávio Amieiro</p>\n\n<p>MeasureIt is an unnecessary extension to have if you install the Web Developer Toolbar. Web Developer Toolbar includes a ruler as one of its features. Under the "<code>Miscellaneous</code>" category for Web Developer click the option "<code>Display Ruler</code>" to use a ruler identical to the MeasureIt one.</p>\n\n<p>That will allow you reduce the number of extensions needed by at least one.</p>\n'}, {'answer_id': 36437, 'author': 'Vagnerr', 'author_id': 3720, 'author_profile': 'https://Stackoverflow.com/users/3720', 'pm_score': 2, 'selected': False, 'text': '<p>The ones I have are...</p>\n\n<ul>\n<li><a href="https://addons.mozilla.org/en-US/firefox/addon/5369" rel="nofollow noreferrer">Y-SLow</a></li>\n<li><a href="https://addons.mozilla.org/en-US/firefox/addon/3829" rel="nofollow noreferrer">Live Headers</a></li>\n<li><a href="https://addons.mozilla.org/en-US/firefox/addon/1843" rel="nofollow noreferrer">Firebug</a></li>\n<li><a href="https://addons.mozilla.org/en-US/firefox/addon/6622" rel="nofollow noreferrer">Dom Inspector</a></li>\n</ul>\n'}, {'answer_id': 36464, 'author': 'Juan', 'author_id': 550, 'author_profile': 'https://Stackoverflow.com/users/550', 'pm_score': 0, 'selected': False, 'text': '<p>Adding to everyones lists, <a href="https://addons.mozilla.org/en-US/firefox/addon/966" rel="nofollow noreferrer">Tamper Data</a> is quite useful, lets you intercept requests and change the data in them. \nIt can be used to bypass javascript validation and check whether the server side is doing its thing.</p>\n'}, {'answer_id': 36465, 'author': 'Rowan', 'author_id': 2493, 'author_profile': 'https://Stackoverflow.com/users/2493', 'pm_score': 0, 'selected': False, 'text': '<p>I use <a href="https://addons.mozilla.org/en-US/firefox/addon/60" rel="nofollow noreferrer">Web Developer</a>, it\'s a real time saver.</p>\n'}, {'answer_id': 36480, 'author': 'Joseph Pecoraro', 'author_id': 792, 'author_profile': 'https://Stackoverflow.com/users/792', 'pm_score': 2, 'selected': False, 'text': '<p>One that wasn\'t mentioned yet is this <a href="http://users.skynet.be/mgueury/mozilla/" rel="nofollow noreferrer">HTML Validator</a> extension that I found very useful.</p>\n'}, {'answer_id': 52280, 'author': 'Jon', 'author_id': 4764, 'author_profile': 'https://Stackoverflow.com/users/4764', 'pm_score': 4, 'selected': False, 'text': '<p>Here are mine (developer centric):</p>\n\n<ol>\n<li><p><a href="http://getfirebug.com/" rel="nofollow noreferrer">FireBug</a> - a myriad of productivity enhancing tools, includes javascript debugger, DOM inspector, allows you to edit the CSS/HTML on the fly which is highly valuable for troubleshooing layout and display problems.  </p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/60" rel="nofollow noreferrer">Web Developer</a> - again another great developer productivity tool.  I mostly use it for quickly validating pages, disabling javascript (yes I disable javascript sometimes, don\'t you?),  viewing cookies, etc.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/966" rel="nofollow noreferrer">Tamper Data</a> - lets you tamper with http headers, form values, cookies, etc. prior to posting back to a page, or getting a page.  Incredibly valuable for poking and prodding your pages, and seeing how your web app responds when used with slightly malicious intent.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/216" rel="nofollow noreferrer">JavaScript Debugger</a> - has a few more features than javascript debugger provided by firebug.  Although I must admit, I sparingly use this one since firebug has largely won me over.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/3829" rel="nofollow noreferrer">Live HTTP Headers</a> - invaluable for troubleshooting, use it frequently.  Lets you spy on all HTTP headers communicated back and forth between client and server.  It has helped me track down nefarious problems, especially when debugging issues when deploying your web app between environments.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/4276" rel="nofollow noreferrer">Header Spy</a> - nice addon for the geeky types, shows you the web server and platform a web site runs on in the status bar.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/539" rel="nofollow noreferrer">MeasureIt</a> - I don\'t use this all too frequently, but I\'ve still found it valuable from time to time.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/271" rel="nofollow noreferrer">ColorZilla</a> - again, not something I use all that frequently, but when I need it, I need it.  Valuable when you want to know a color and you don\'t want to dig through a CSS file, or open up a graphics editing app to get a color embedded in some image.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/573" rel="nofollow noreferrer">Add N Edit Cookies</a> - this has been a great debugging tool in web farms where the load balancer writes a cookie, and uses the cookie value to keep your session "sticky".  It allowed me to switch at will between servers to track down problems on specific machine. Also a good tool if you want to try to mess with a site that uses cookies to track your login status/account, and you want to see how your code responds to malformed or hacked info.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/1944" rel="nofollow noreferrer">Yellowpipe Lynx Viewer Tool</a> - yeah I know what your thinking, lynx, who needs it, its so 1994.  But if you are developing a site that needs to take web accessibility into account (meaning accessible to users with visual impairments who use screen readers), or if you need to get a sense of how a web spider/indexer "sees" your site, this tool is invaluable.  Granted, you could always just go out and grab Lynx for yourself<a href="http://www.vordweb.co.uk/standards/download_lynx.htm" rel="nofollow noreferrer">here\'s the windows xp port that I use</a>.</p></li>\n</ol>\n\n<p>I\'ve got a handful of other addons that I\'ve used from time to time that I\'ll just quickly mention: FireFTP (one I installed wasn\'t stable and I\'ve not tried a newer release), Html Validator (also found this one unstable, least back when I installed like a year ago),  IE Tab (I usually just have both IE and FireFox open concurrently, but that is just me, I know many others that find this addon useful).</p>\n'}, {'answer_id': 75885, 'author': 'Jon Schneider', 'author_id': 12484, 'author_profile': 'https://Stackoverflow.com/users/12484', 'pm_score': 0, 'selected': False, 'text': '<ul>\n<li><p>+1 for <a href="https://addons.mozilla.org/en-US/firefox/addon/1743" rel="nofollow noreferrer">LORI</a> ("life-of-request-info").  It\'s a very convenient alternative for rough measurements of the load time of a particular web page -- the kind of thing that you might otherwise use an external stopwatch for.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/777" rel="nofollow noreferrer">New Tab Homepage</a>.  Combined with a "speed dial"-type homepage (a personal, fast-loading page of links that you use frequently), helps you get where you\'re going faster when you open a new browser tab.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/112" rel="nofollow noreferrer">LastTab</a>.  Changes the behavior of Ctrl+Tab to let you navigate back and forth between your most-recently-used tabs with repeated presses of Ctrl+Tab, the same way that Alt+Tab works in Windows.  Also provides a nice view of all open tabs while Ctrl is still being held down for easy navigation.  (The resultant behavior is very similar to the Ctrl+Tab behavior in recent releases of Visual Studio.)</p></li>\n</ul>\n'}, {'answer_id': 75930, 'author': 'Jon Homan', 'author_id': 7589, 'author_profile': 'https://Stackoverflow.com/users/7589', 'pm_score': 0, 'selected': False, 'text': '<p><a href="http://fireftp.mozdev.org/" rel="nofollow noreferrer">FireFTP</a> is good for grabbing/uploading any necessary files.</p>\n'}, {'answer_id': 75956, 'author': 'Kibbee', 'author_id': 1862, 'author_profile': 'https://Stackoverflow.com/users/1862', 'pm_score': 0, 'selected': False, 'text': '<p>I find Hackbar to be quite useful.  Very useful if you want to edit the querystring part of the url, to test for vulnerabilities, or just general other  types of testing where you might end up with complicated query string values.</p>\n'}, {'answer_id': 160377, 'author': 'benc', 'author_id': 2910, 'author_profile': 'https://Stackoverflow.com/users/2910', 'pm_score': 0, 'selected': False, 'text': "<p>I was learning DOM inspector, but I've switched to Firebug.</p>\n"}, {'answer_id': 1637034, 'author': 'Srinivas M.V.', 'author_id': 131024, 'author_profile': 'https://Stackoverflow.com/users/131024', 'pm_score': 0, 'selected': False, 'text': '<p>Some of which has been missed above are here </p>\n\n<ul>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/3371" rel="nofollow noreferrer">Load Time Analyzer</a> – View detailed graphs of the loading time of web pages in firefox. The graphs display events like page requests, image loading times etc.</p></li>\n<li><p><a href="https://addons.mozilla.org/en-US/firefox/addon/2691" rel="nofollow noreferrer">Poster</a> – A must have tool for web developers enabling them to interact with web services and other web resources.</p></li>\n<li><p><a href="http://www.karmatics.com/aardvark/" rel="nofollow noreferrer">Aardvark</a> – A cool extension for web developers and designers, allows them to view CSS attributes, id, class by highlighting page element individually.</p></li>\n</ul>\n'}, {'answer_id': 1783527, 'author': 'Kristian J.', 'author_id': 4588, 'author_profile': 'https://Stackoverflow.com/users/4588', 'pm_score': 0, 'selected': False, 'text': '<p><a href="http://www.fiddler2.com/fiddler2/" rel="nofollow noreferrer">Fiddler</a> is a really great debugging proxy. Think of it as a more powerful version of the "Net" panel in Firebug or the Live HTTP headers.</p>\n\n<p>It used to be an IE-only extension, now it also has hooks into Firefox.</p>\n'}, {'answer_id': 1889434, 'author': 'flpmor', 'author_id': 224263, 'author_profile': 'https://Stackoverflow.com/users/224263', 'pm_score': 0, 'selected': False, 'text': '<p><a href="http://groundspeed.wobot.org" rel="nofollow noreferrer">Groundspeed</a>, is useful for testing server side code. It was created for input validation tests during pentest, but can be useful for any test that require manipulating input (similar to TamperData).</p>\n\n<p>It lets you control the form elements in the page, you can change their type and other attributes (size, lenght, javascript event handlers, etc). So for example you can change a hidden field or a select to a textbox and then enter any value to test the server response and stuff like that.</p>\n'}, {'answer_id': 3591392, 'author': 'sweets-BlingBling', 'author_id': 427242, 'author_profile': 'https://Stackoverflow.com/users/427242', 'pm_score': 1, 'selected': False, 'text': "<p>Firefox addons:</p>\n\n<ol>\n<li><p>FireBug:helps web developers and designers test and inspect front-end code. It provides us with many useful features such as a console panel for logging information, a DOM inspector, detailed information about page elements, and much, much more.</p></li>\n<li><p>Web Developer-gives you the power disable CSS, edit CSS on the fly, measure certain areas of a page and much more.</p></li>\n<li><p>ColorZilla\nJust click on the icon, hover over the area you'd like to know the hex color for, and click.</p></li>\n<li><p>Window Resizer\nto make sure the layout is displayed properly in the standard resolutions of today. </p></li>\n<li><p>Total Validator\nvalidating websites much easier by checking HTML, links, CSS and doing a lot more.</p></li>\n</ol>\n"}]
['https://Stackoverflow.com/questions/36407', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/3305/']