Paessler PRTG Network Monitor, Nagios, Datadog, Observium, Cacti, The Dude, LibreNMS, Spiceworks, PHP Server Monitor, NIXStats, Pinguzo, Ganglia, MRTG, Icinga, Datapath.io, System Center Operations Manager, Storm.dev, PhpSysInfo, Monitis, Munin, NetXMS, Nagwin, LANState, Eyes Of Network, Alerta, WhatsUp Gold, Cabot, Pandora FMS, OP5 Monitor, Glimpse, LogicMonitor, Auvik, pgDash, CloudMonix, SigNoz, Intermapper, Monitorix, Centreon Enterprise Server, CloudStats, SeaLion, ElastAlert, openITCOCKPIT, Thruk, SyWatchdog, NetCrunch, AppBeat, Opsview Monitor Mobile, ActiveXperts Network Monitor, HappyApps, Linux temperature web monitor, CoScale, Axibase Time Series Database, Hosted Graphite, Sentinet3, Anturis, AppPerfect Agentless Monitor, CloudView NMS, Server Density, InfraCheck, OpsDash, Statance, SentinelAgent, Dataloop.io, AppOptics, CloudScreener, VirtualMetric, AggreGate Network Manager, GFI MAX RemoteManagement, DeferPanic, Blue Matador, Monique.io, Bosun, Alignak, Monometric.IO, LiveMon are some alternatives to Zabbix.