Open source software provides an attractive alternative to more costly commercial products, but can open source products deliver enterprise-grade results? To answer this question we tested four open source products: OpenNMS, Pandora FMS, NetXMS and Zabbix. All four products were surprisingly good. We liked Pandora FMS for its ease of installation and modern user interface. In general, we found configuration to be easier and more intuitive with Pandora than the other contenders.
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