Firefox 3.1 introduces a number of new features, as well as additional and improved support for a wide variety of web standards. This article offers an extensive list, with links to articles covering the major improvements.
There has been several blogs that lists the best Firefox extensions that are out there. Since Pingdom are operating in the web performance and monitoring field we decided to make our own list of valuable Firefox extensions. In this list we don’t cover the well known extensions such as Web Developer Toolbar and Firebug but rather focused on “lesser known” ones that can help development and testing. Extensions that deal with HTML, CSS, SEO and design were also ignored since other blogs have already made good lists of these kinds of tools. Let’s get on to the list.
Firecookie is a an extension for Firebug that makes possible to view and manage cookies in your browser. Apart from all the other cookie managers and viewers available as Firefox extensions, this one is made as an extension for Firebug, so web developer has the functionality accessible within familiar Firebug’s UI.