Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks and included in most Windows Server operating systems as a set of processes and services.
Cost / License
- Pay once
- Proprietary
Platforms
- Windows

Microsoft Active Directory is the most popular Windows alternative to 389 Directory Server.
Microsoft Active Directory is the most popular commercial alternative to 389 Directory Server.
- Microsoft Active Directory is Paid and Proprietary

























Full-fledged human- and machine-identity management suite with a convenient management interface