Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.
DotNetOpenAuth - DotNetOpenAuth is a free-to-use compiled library that comes with the real support to your site visitor to login with the help of openIDs via getting control of the ASP.NET control onto the page.
Corecon - Corecon offers integrated estimating, project management, and job costing for small to medium-sized construction companies.
ASP.NET SAML - ASP.NET SAML is an open-source authentication utility that has been used for exchanging authentication and authorization data between the channels.
Touchplan - Touchplan is a construction operations management software that helps builders of all sizes to manage their sites more efficiently.
IdentityServer - An open-source, standards-compliant, and flexible OpenID Connect and OAuth 2.x framework for ASP.NET Core