Yes, both Observium and Nagios XI offer a Free Trial.
Observium is designed for Large Enterprises, Medium Business and Small Business.
Nagios XI is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both Observium and Nagios XI are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to Observium includes SolarWinds RMM, Nagios XI, Zabbix, PRTG Network Monitor, Spiceworks Network Monitor, NetBeez, Nagios Network Analyzer, SolarWinds ipMonitor, LiveNX, SolarWinds Network Performance Monitor and NinjaOne (NinjaRMM).
Some top alternatives to Nagios XI includes Zabbix, Ne.Mo. Network Monitoring, PRTG Network Monitor, Spiceworks Network Monitor, Nagios Network Analyzer, SolarWinds ipMonitor, Netcrunch, OP5 Monitor, SolarWinds Network Performance Monitor, Checkmk and NinjaOne (NinjaRMM).