Open source
Icinga
Open source infrastructure monitoring with alerts for hybrid setups
Infra MonitoringScalable monitoring system
Alternatives to Nagios
12 tools like Nagios, chosen by what they do. About Nagios
Open source
Zabbix
Open source monitoring for networks, servers and applications
Infra MonitoringEnterprise open monitoring
Open source
Checkmk
Full-stack monitoring for hybrid IT, cloud and on-premises
Infra MonitoringIT infrastructure monitoring
Open source
Wireshark
Open source network protocol analyzer for capturing traffic
Infra MonitoringNetwork protocol analyzer
Open source
Netdata
Real-time infrastructure monitoring with per-second metrics
Infra MonitoringReal time infra metrics
Open source
Telegraf
Open source agent that collects metrics, logs and other data
Infra MonitoringMetrics collection agent
Freemium
Datadog
Cloud monitoring for infrastructure, applications and logs
MonitoringCloud monitoring platform
Open source
Freemium
New Relic
Observability platform for applications, infrastructure and logs
MonitoringFull-stack observability
Curated
Uptime.com
Uptime, API, browser and real user monitoring with status pages
Uptime MonitoringWebsite and API monitoring
Open source
OpenReplay
Open source session replay and product analytics you can self-host
Real User MonitoringOpen source session replay
Free trial
Elastic Observability
Logs, metrics and traces in one platform, built on OpenTelemetry
Logs and SearchSearch powered observability