The SAML Chrome Panel is an open-source Chrome extension that adds support for SAML Requests and Responses in the Developer Tools window. It acts as a panel in the Chrome Developer Tools section, monitoring traffic in the active tab and displaying SAML messages in a separate tab. It also offers features such as scrubbing links, importing/exporting network traffic in JSON format, and toggling the display of SAML traffic. The extension is constantly updated and has contributors from the GitHub community.