LepideAuditor - LepideAuditor Suite - A change auditing software for Active Directory, GPO and Exchange Server.
WatchGuard Unified Threat Management - Unified Threat Management is an all-in-one network security platform.
ManageEngine ADAudit - ManageEngine ADAudit is a real-time windows active directory auditing tool.
Time Doctor - Time Tracking and Time Management Software that is accurate and helps you to get a lot more done each day.
NetWrix Auditor - Configuration Auditing of IT Infrastructure
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more