A.M.O.
For Mozilla software, an add-on is a software component that extends the functionality of the Firefox web browser and related applications – although most are browser extensions. Mozilla provides add-ons to users via its official add-on website.
In 2017, Mozilla enacted major changes to the application programming interface (API) for extensions in Firefox, replacing the long-standing XPCOM-based add-on APIs with the WebExtensions API that is modeled after Google Chrome's API. Thus add-ons that remain compatible with Firefox are now largely compatible with Chrome as well. As of January 2026, there are more than 74,000 add-ons and over 511,000 themes available for Firefox.
SAMURAI
- 2025-11-20T00:00:00.000000Z
FRENESÍ
- 2024-11-07T00:00:00.000000Z
RESET
- 2022-03-06T00:00:00.000000Z
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