Best Web Development Mozilla Addons Alternatives

Good Website Inspector is an extended ruleset for YSLOW, a Firefox AddOn, to check source codes of HTML pages to get easy and fast hints to optimize the current page.

Adds to appMenu (Legacy) or ToolsMenu or Tool-bar, The Restart Browser menu item or Button that allows users to easily restart the web browser without losing current open pages.

Allows easy duplication of current tab in new tab or window, Similar to Goggle chrome default feature, This feature is already available by holding down CTRL key | Command + dragging the tab to left or right.

irclnx.com firefox extension for use with irclnx.com services. pastebin, irc, url shortener, random links.

CSS Live Reloader is a firefox extension to ease website CSS development. The extension reloads a page CSS whenever it changes on the server, resulting in something close to live editing of the Cascading Stylesheet.

Post sites and photos to your blog, send them to your friends, and keep track of your message queue.

Homepage: http://user.adme.in/

Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.

Forget about the [F5] key! WSTabReload is a web development productivity tool that will help you to automatically reload your browser tabs every time selected local files are changed.

Select any bugzilla.mozilla.org bug number on a webpage and press the button to go there or select and right click.

Easily switch between your development and live servers.

Firebug は、Web ページを閲覧中にクリック 1 回で使える豊富な開発ツールを Firefox に統合します。あなたはあらゆる Web ページの CSS、HTML、および JavaScript をリアルタイムに編集、デバッグ、またはモニタすることができます。

Window Frame helps the shopping experience by showing users relevant deals

Toggle the web console with a button.

Websecurify is a powerful cross-platform web security testing technology designed from the ground up with simplicity in mind.

'Maximize your screen space by adjusting Firefox window TitleBar, borders, Tabs, Toolbars, etc!', with 'smart' options, *optional* custom caption & resizers.  
Multiple Configurable Actions for both screen-corner buttons: Firefox & Close buttons!

See the current time on the development panel!

A collection of userscripts to make Moodle developers' life easier.

Makes The AppMenu Only Show Program Icon.

Play videos over any Tab in Picture in Picture format. Visit a Web page, such as YouTube, and click the Video icon to set the video in PiP mode, then move from the active tab to other working tabs while watching the video in the floating window.