Tom Adelstein offers a shortlist:
1.Windows Network Neighborhood visibility and UNIX/Linux visibility in the same panel.
2.Active Directory password management which includes single sign-on and password expiration policies.
3.Interoperability with Exchange 5.5 and Exchange 2000.
4.Font compatibility with Microsoft Office and Openoffice.org and/or StarOffice.
5.Windows Terminal Server clients using RDP out of the box for home grown applications and special Windows applications.
6.Ability to click on a file in a Windows or Samba share and initiate the associated application.
7.Device management for hardware compatibility.
8. Compatible Windows Media player Codecs.