I apologize for not starting a new thread before, I didn't realize that the nanog mailing list created a thread-index rather than using the subject. Even though NANOG is primarily for network operators, I know that a number of members work in NOCs where there is also monitoring of servers/applications. I would appreciate it if anyone has suggestions about monitoring systems that would be applicable to our environment. We have a large number of custom applications on a large number of hosts including Windows 2003/2008, Linux x86/x86_64 and Solaris Sparc/x86_64. We are looking for a better way of monitoring our environment. We are looking for recommendations for opensource or low-cost. We would prefer solutions where the basic monitoring is ready out of the box. Native agents with custom scripting would be highly desired (rather than SNMP/DMI/WMI polling). Some of our requirements: . Native agents for Windows 2003/2008, Linux, Linux x86_64, Solaris Sparc and Solaris x86_64. Either binaries or source code. . Ability to send alerts via email, pager and/or snmp . Monitoring of OS properties like memory, disk, cpu, etc... . Ability to extend agents with scripting to allow monitoring of custom services . Plug-in architecture for third-party add-ons . Reliable Architecture . Reasonable user interface . Non-blocking polling . Active Project (New Releases on regular basis and have existed for a reasonable period) Based on our research and feedback from NANOG, we have put a preliminary list of product to evaluate: Hyperic http://www.hyperic.com/ OpenNMS http://www.opennms.org/wiki/Main_Page opsview http://www.opsview.org/ osimius http://www.osmius.net/en/ PandoraFMS http://pandorafms.org/ Zabbix http://www.zabbix.com/ Groundwork http://www.groundworkopensource.com/ Nagios http://www.nagios.org Zenoss http://zenoss.com OpManager http://www.manageengine.com Orion http://www.solarwinds.com/products/orion/ BigBrother http://bb4.com/ Argus http://argus.tcp4me.com/ Xymon http://www.xymon.com Spiceworks http://www.spiceworks.com/ ICINGA http://www.icinga.org ---- Matthew Huff | One Manhattanville Rd OTA Management LLC | Purchase, NY 10577 http://www.ox.com | Phone: 914-460-4039 aim: matthewbhuff | Fax: 914-460-4139