Grafana, Graylog, Zabbix, Lansweeper, Paessler PRTG Network Monitor, Sentry, Splunk, Nagios, Wazuh, Observium, Cacti, The Dude, ntop, Loggly, New Relic, Spiceworks, NetWorx, Kiwi Syslog Server, PHP Server Monitor, TrafficMonitor, logsniffer, AppDynamics, Nagios Log Server, NIXStats, Pinguzo, Prometheus, Ganglia, Icinga, Honeybadger, Bugfender, Rollbar, Papertrail, System Center Operations Manager, Storm.dev, Kibana, Monitis, Fluentd, RapidSpike, Humio, Munin, NetXMS, Instana, AppSignal, Logstash, Better Stack Logs, Glowroot, LogDNA, LANState, Zipkin, Alerta, Monika, SenseLogs, WhatsUp Gold, Sysdig, Logentries, Cabot, Sawmill, Octopussy, Pandora FMS, OP5 Monitor, Site24x7, Xymon, Glimpse, Shinken, LogicMonitor, Pinpoint APM, syslog-ng Store Box, Corlysis, logz.io, Timber, Controlup, Scalyr, pgDash, CloudMonix, SigNoz, NodeQuery, Intermapper, Treblle, CloudStats, Rails Performance, SeaLion, Stackdriver, New Relic Insights, ElastAlert, openITCOCKPIT, SyWatchdog, NetCrunch, Open Web Analytics, RootCause, AppBeat, LogLogic, BigPanda, HappyApps, FusionReactor, Wavefront by VMware, VividCortex, SpectX, CoScale, Axibase Time Series Database, Hosted Graphite, 2 Steps, cfxPulse, Sentinet3, Hyperic, concurix, Anturis, Logscape, Logmatic.io, SteelCentral, AppPerfect Agentless Monitor, Trace by RisingStack, CloudPelican, Server Density, OTUS SIEM, OpsDash, Statance, XpoLog, Mothership, Congether, SentinelAgent, Atatus, SureLog, Loom Systems, HostedMetrics, Dataloop.io, AppOptics, Tivoli Business Service Manager, CloudScreener, ErrorFeed, AggreGate Network Manager, RST Cloud, Holori, Shipbook, GFI MAX RemoteManagement, IQLECT, DeferPanic, Cloudkick, javOSize, Blue Matador, Monique.io, Bosun, Servers and network monitoring, eG Enterprise, SpectrumApp, Monometric.IO, LiveMon are some alternatives to Datadog.