: Tampermonkey was open-source up to version 2.9 . You can still find this legacy source code on GitHub , though versions 3.0 and above are closed-source and proprietary. The Danger of "Cracked" Browser Extensions

: For Firefox users, the Tampermonkey Version History on Mozilla’s official site allows you to download and install previous versions directly.

While searching for a it is important to clarify that Tampermonkey is a free-to-use browser extension. Because the software does not require a paid subscription or license key for its standard userscript management features, a "cracked" version—which typically implies bypassing a paid barrier—does not officially exist.

Extensions require broad permissions to "read and change all your data on all websites" to function. Downloading a modified or "cracked" file from a third-party site exposes you to:

: The Tampermonkey Homepage provides specialized versions, such as Tampermonkey Legacy (MV2) for Chrome versions 71+ and newer versions for modern browsers.

If you need an older version for compatibility with an aging browser (like those on Windows 7 or older Chrome builds), you should only use official or reputable sources: