NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.

Crowd Vox - Crowd Vox is a secured, robust, fully configurable, and customizable review script that helps you to create feature-rich business directories.

Server Monitoring - A server monitor is a tool that monitors your server and website on close intervals and reports to you if it's inaccessible.

Zohno Z-Term - The Easy-to-Use Active Directory User Termination Tool

Nodeping - NodePing Server Monitoring and Web Site Monitoring. Simple but powerful Internet service monitoring.

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