XSEDE Web Single Sign On Service
Powered by Globus Auth, XSEDE's Web Single Sign-On (Web SSO) service provides a uniform, consistent, secure way to sign on to web applications using XSEDE user IDs.
Science gateway and application developers can use XSEDE's Web SSO to enable users to sign-on (login) to an application using either campus or XSEDE credentials. This service is based on Globus Auth, an OpenID Connect/OAuth 2.0 service provided by Globus at the University of Chicago.
Get the full story at https://www.xsede.org/web/site/ecosystem/services/sso.