No a fan of Microsoft systems, but they have GS-API/Kerberos and AD FS 3. Unix users will want SSH key management, but apart from that, Microsoft made efforts t

No a fan of Microsoft systems, but they have GS-API/Kerberos and AD FS 3. Unix users will want SSH key management, but apart from that, Microsoft made efforts to help people spread single sign-on to much of their infrastructure. If your payroll system has a web interface, you can have an applicative firewall in front replay your stored credentials as a hacky SSO (after checking your identity another way, of course).