Yes, both CloudRadar and ManageEngine OpManager offer a Free Trial.
CloudRadar is designed for Freelancers, Medium Business and Small Business.
ManageEngine OpManager is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both CloudRadar and ManageEngine OpManager are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to CloudRadar includes NinjaOne (NinjaRMM), PRTG Network Monitor, Spiceworks Network Monitor, NetBeez, Nagios Network Analyzer, SolarWinds ipMonitor, Netcrunch, vRealize Network Insight, OP5 Monitor, ManageEngine OpManager and Pulseway.
Some top alternatives to ManageEngine OpManager includes Site24x7, Zabbix, Ne.Mo. Network Monitoring, PRTG Network Monitor, Spiceworks Network Monitor, Nagios Network Analyzer, SolarWinds ipMonitor, ManageEngine NetFlow Analyzer, OP5 Monitor, SolarWinds Network Performance Monitor and NinjaOne (NinjaRMM).