The iSphere Project for and RDi 9.5.1.3+
The Simplest Multi-User Latency Monitoring Web App
Open Source Managed File Transfer
Monitoring of websites with spider and email notifications
RanMon is a program that provides you with a way to internet monitor
HTTProvjera is a program that provides you with a way to web monitor
Stock tracking application
Uechi APM Web Server Performance Monitor Open Source