AltClipboard is a free Chrome extension developed by Yanke Guo. As a browser add-on in the Browsers category, specifically under Add-ons & Tools, AltClipboard offers users an alternative clipboard for secure text, without relying on the system clipboard.

With AltClipboard, users can copy and paste text between Chrome tabs without their data leaking to the system clipboard. This provides an added layer of security and privacy for users who want to keep their text interactions within the browser.

The extension's source code is available on GitHub for users who are interested in reviewing the code base. AltClipboard's code is simple and does not collect or share any user data, ensuring a trustworthy experience.

Overall, AltClipboard is a useful tool for users who prioritize security and privacy while managing text within their Chrome browser.