Identity server based on Squidex Headless CMS. It implements the OpenId Connect and OAuth 2.0 protocols to act as a central single sign on server. The UI is based on the templates for ASP.NET Core and Bootstrap v4, but highly customizable. You can define a custom logo, footer text and links, a bootstrap theme or/and a custom style and many more. The UI has been designed to be lightweight and easy to integrate.