Self-hosted, lightweight server and website monitoring and O&M tool
Monitorix is a free, open source, lightweight system monitoring tool
Apache HertzBeat(incubating) is a real-time monitoring system
Open Source Monitoring System for performance and availability.
Enhanced Apache Server Status page - for one or multiple servers
Zenoss - Intelligent IT Operations Management
A network tool to control the bandwidth over your local network
Enterprise-class, distributed monitoring solution for networks & apps
A cross platform http sniffer with a web UI
Standalone web application allowing to monitor end points availability
Open source tool to monitor your servers and websites
Webbased Dashboard to show the status of your IT infrastructure
Dashboard of network top-talkers using netflow sources
HTTProvjera is a program that provides you with a way to web monitor
Passive Proxy Daemon sniffs packets and creates squid proxy logs