Checkmk - Checkmk - the software for effective IT monitoring
Zenoss Core - Zenoss (Zenoss Core) is an open source application, server and network management platform based on...
Zabbix - Track, record, alert and visualize performance and availability of IT resources
LANState - LANState - Network Mapper and Device Monitor
Cloudlytics - Analyze Your Amazon S3 & CloudFront Logs.
Nagios - Complete monitoring and alerting for servers, switches, applications, and services