Integrate Firefox with other tools = Launchy the veritable Swiss Army knife
My extension Launchy is mentioned in this article.
The Launchy extension is a veritable Swiss Army knife when it comes to integrating Firefox with other programs. It provides you with a new context menu for pages, links, and images, giving you the ability to open these items in any of dozens of recognized external programs. On Windows, these programs are all discovered automatically, but you can customize the list and even add your own on any operating system. Launchy is an ideal way to handle all kinds of integration points that are otherwise unavailable in Firefox. For instance, if you want to edit the current Web page, you can use the Launchy context menu to send the page source to Mozilla Composer or NVu. If you're on a page with an extremely large image, you can send it to Photoshop for better viewing or editing with a single click.
If you're moving over to Firefox from Mozilla, you've surely noticed how Firefox is built to be a sleeker, faster browsing engine. It accomplishes this in part by shedding all of its counterparts from the Mozilla Suite, including an email/news client, composer, and chat client. But that doesn't mean this functionality is no longer available. With a few extensions -- or with no work at all -- you can make Firefox integrate with your email client as though it were still part of a suite. You don't have to stop there, either; at least one valuable extension gives you the power to connect Firefox with virtually any program on your system.