PingCastle - Because the Active Directory security lies in the process and not in expensive tools, our solution is simple: download PingCastle and apply its methodology.

LepideAuditor - LepideAuditor Suite - A change auditing software for Active Directory, GPO and Exchange Server.

Sysmalogic AD Report Builder - Active Directory Report and Scheduler Quickly find AD info to match your clipboard content

NetWrix Auditor - Configuration Auditing of IT Infrastructure

ManageEngine ADAudit - ManageEngine ADAudit is a real-time windows active directory auditing tool.

Fileaudit - FileAudit monitors, archives and reports on access (or access attempts) to sensitive files and folders stored on Microsoft Windows systems.