The text discusses various tools for debugging Docker registries, offering recommendations for effective troubleshooting. It mentions Docker in Docker (dind) as an efficient way to test different Docker versions swiftly, while Charles Proxy is highlighted as a robust HTTP proxy for inspecting and manipulating HTTP traffic. Socat, described as the "master of sockets," is used for analyzing client-daemon interactions in Docker, and Groxy is presented as a lightweight reverse-proxy specifically designed for use with JFrog Artifactory's Docker registry APIs. The text encourages readers to explore walkthroughs for practical demonstrations of these tools and suggests consulting the JFrog Knowledge Base for expert guidance.