SharePoint, .NET, + just about anything else
As you evaluate single sign-on solutions, make sure to check out ADFS. Here is some content to get you started...
Simplify Single Sign-on Using ADFS
Configure Web SSO authentication by using ADFS (Office SharePoint Server)
Configure Web SSO authentication by using ADFS (Windows SharePoint Services)
A Developer's Introduction To Active Directory Federation Services
Active Directory Federation Services
Knowledge Base Articles
Windows SharePoint Services and SharePoint Portal Server 2003 Support boundaries for Active Directory Federation Services
The role provider and the membership provider cannot be called from Windows SharePoint Services 3.0 on a Windows Server 2003 R2-based computer that is running ADFS and Microsoft Windows SharePoint Services 3.0
</steve>
Are there any WSS 3.0 or MOSS 2007 Support bounderies for ADFS?