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[Link: remotecentral.com]The Mozilla "SeaMonkey" is the all-in-one internet application suite containing a web browser, a mail and newsgroups client, an HTML editor, web development tools, and an IRC chat client in a single software package. The latest version is supposed to be powered by the same engine as Firefox 2 and the upcoming Thunderbird 2. If you only need the browser and mail applications, then I recommend using the discrete Mozilla applications - Firefox (browser), and Thunderbird (mail).
Note: You may have to remove the integrated "SeaMonkey" application first.