Lett Proxy Tab is a Chrome add-on developed by Lett Project that allows users to open links via a secure proxy server. This add-on provides a sandbox-like environment where users can safely open random links on the web without directly connecting to the website.

When using Lett Proxy Tab, users can simply right-click on a link and choose "Open with Proxy Tab" to open it securely. The add-on works by redirecting all HTTP requests to a secure server, encrypting the user's requests and preventing their IP address from being exposed to the destination website.

The main use cases for Lett Proxy Tab include visiting insecure sites, opening short links without knowing what to expect, and keeping the domain name hidden from the user's ISP.

Key advantages of Lett Proxy Tab include always encrypted traffic served through a secure connection, private browsing with no exposed domain name, and on-demand functionality that requires no additional configuration.