Implementing Single Sign-On (SSO) using Security Assertion Markup Language (SAML) can significantly enhance security and user experience.Common SAML testing challenges include complex configuration, time-consuming debugging, lack of testing tools, and security concerns.To overcome these challenges, a free, no-signup SAML testing tool called SAML Tester has been developed.SAML Tester offers easy configuration, instant debugging, security checks, and a user-friendly interface, making SAML testing accessible to everyone.