Software Installations from Non-Mozilla Sites

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The best source of Firefox extensions is Mozilla. Its website, at, lists popular extensions and optionally all available extensions.

Sometimes, however, you might want to install an extension that is not available on the Mozilla website. Before Firefox allows these to be installed, you need to approve, or allow, Firefox to do the installation. Allowing Firefox is done on a site-by-site basis (see Figure 5.6), as well as globally. Conservative users should simply uncheck Allow Web Sites to Install Software, whereas more advanced or trusting users should check the Allowed Sites list to control which sites may (or may not, if they are not in the list!) install software.

Figure 5.6. Under Options, Content, you specify who is allowed to install software.

In my allowed sites, I have three that are sites.

In addition to extensions, Firefox also supports plug-ins. The most popular plug-ins include Adobe Reader, Java Plug-in, Macromedia Flash Player, QuickTime, RealPlayer, and Windows Media Player. In addition to these, there are more than 50 additional plug-ins that work with Firefox.

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    Firefox and Thunderbird. Beyond Browsing and Email
    Firefox and Thunderbird Garage
    ISBN: 0131870041
    EAN: 2147483647
    Year: 2003
    Pages: 245

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