Classic Add-Ons Archive icon
Classic Add-Ons Archive icon

Classic Add-Ons Archive

Classic Add-ons Archive catalog contains 93,598 versions of 19,450 Firefox add-ons created by 14,274 developers over the past 15 years using XUL/XPCOM technology before Mozilla decided to ruin the classic extensions ecosystem and go exclusively to WebExtensions.

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  • Mac  As extension for Firefox-based browsers
  • Windows  As extension for Firefox-based browsers
  • Linux  As extension for Firefox-based browsers
  • Waterfox
  • Pale Moon
  • Basilisk
  • SeaMonkey
  • Firefox
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  •  530 Stars
  •  58 Forks
  •  20 Open Issues
  •   Updated  
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Classic Add-Ons Archive was added to AlternativeTo by Danilo Venom on and this page was last updated . Classic Add-Ons Archive is sometimes referred to as Classic AddOns Archive, CAA. 

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What is Classic Add-Ons Archive?

Classic Add-ons Archive catalog contains 93,598 versions of 19,450 Firefox add-ons created by 14,274 developers over the past 15 years using XUL/XPCOM technology before Mozilla decided to ruin the classic extensions ecosystem and go exclusively to WebExtensions.

All the data contained in this catalog was obtained from publicly available sources such as AMO, Wayback Machine and other open Internet directories and collections. Cloud storage is kindly provided by Waterfox Project.

This add-on has been tested with the following browsers (in alphabetical order): Basilisk RC1+, Firefox ESR 45-52, Firefox 45-58b, Pale Moon 27+, SeaMonkey 2.40+ and Waterfox 55+. In order to install it into Firefox release or beta, you need to disable the extensions signing requirement. Multi-process mode (e10s) is not supported.