Mozilla Update hosts Extensions and Themes for Mozilla software. On this site you can find Extensions and Themes for Mozilla Firefox, Mozilla Thunderbird and the Mozilla 1.x suite, with more to come. The site is broken up into sections for each product, with the extensions and themes categorized to be easy to find. They’re also sorted by what version of the product you’re using, so you can browse only for Firefox 0.9 compatible extensions, for example.
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