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

Brilliant Directories - Brilliant Directories offers member management solution to streamline all aspects of membership website or association.

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.

LogicSpice Business Directory Listing Script - PHP Business Directory Listing Script - Yellow Pages Clone Script

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

phpListings.com - Start your own business directory website with customizable widget-based templates and effective listing monetization tools.