18.8
Checkmk monitors cloud, hybrid, and data center infrastructure, including containers, networks, and web, mail, and database servers.
Free planOpen sourceAndroidiOSWeb
Best Infrastructure Monitoring in 2026
Infrastructure monitoring tools help you keep track of hosts, services and virtual machines across your environment. Compare deployment models and agentless monitoring with OS coverage, included hosts and metrics retention to understand each option's monitoring scope. Service monitoring and VM monitoring add detail on what can be watched; free-plan availability and paid-from pricing offer cost context. Netdata,…
28.7
Netdata is an observability platform for monitoring infrastructure and investigating problems in real time.
Free planOpen sourceAndroidiOSWeb
38.1
Nagios XI is monitoring software installed on a Linux server you own.
Free planWebAPILinux
- 4
MetricsHub
MetricsHub is an open-source, OpenTelemetry-based metrics collector for monitoring infrastructure and exporting metrics to observability platforms.
Free planOpen sourceWebAPILinuxSelf-hosted7.9From $15 a month - 5
openITCOCKPIT
openITCOCKPIT is an open-source monitoring platform for infrastructure and applications, including servers, virtual machines, network devices,…
Free planiOSWebAPILinux7.5From €1 a year - 6
Icinga
Icinga monitors infrastructure and applications, collecting and analyzing data to help teams identify and resolve errors.
Free planWebAPILinuxSelf-hosted7.3From $2,000 a year - 7
Sensu Go
Sensu Go is a commercial monitoring and observability solution for enterprises, designed for DevOps and SRE teams overseeing infrastructure from Kubernetes to bare metal.
Free planWebAPILinuxmacOS7.2From $36 a year - 8
Site24x7 Server Monitoring
Site24x7 Server Monitoring tracks performance and availability across on-premises, cloud, virtual, and hybrid servers.
AndroidiOSWebAPI7.1From $9 a month - 9
Azure Monitor
WebAPILinuxmacOS7.0 - 10
Oracle Cloud Infrastructure Container Registry
Oracle Cloud Infrastructure Container Registry is an Oracle-managed service for storing, sharing, and managing container images.
Free planWebAPILinux7.0Free plan - 11
eG Enterprise
eG Enterprise is an application and infrastructure monitoring platform that correlates user experience, application behavior, and infrastructure…
WebLinuxSelf-hostedWindows6.8From $100 a month - 12
LogicMonitor
LogicMonitor Envision brings metrics, logs, events, and traces together to monitor and troubleshoot infrastructure.
WebAPILinuxWindows6.8From $16 a month - 13
Google Cloud Monitoring
Google Cloud Monitoring provides visibility into the performance, availability and health of applications and infrastructure.
WebAPILinuxWindows6.7From $0.06 a month - 14
Checkmate
Checkmate is a free, open-source, self-hosted dashboard for infrastructure monitoring, uptime, PageSpeed, and incident alerts.
Free planWebAPILinuxmacOS6.6Free plan - 15
Datadog Infrastructure Monitoring
Free planWebLinuxmacOSWindows6.6From $15 a month - 16
Prometheus
Prometheus is a free, open-source systems monitoring and alerting toolkit.
Free planWebLinuxmacOSSelf-hosted6.6Free plan - 17
Zabbix
Zabbix is an open-source monitoring and observability solution for infrastructure, applications, networks, and services.
WebAPILinuxmacOS6.6 - 18
Fivenines
Fivenines combines server, network, uptime and cron monitoring in one cloud platform for DevOps and SRE teams, managed service providers, hosting…
WebAPILinuxWindows6.5From €15 a month - 19
Sematext Monitoring
Sematext Monitoring provides real-time visibility into business and cloud infrastructure through a hybrid service available on the web and for Linux and Windows.
WebLinuxWindows6.5$2.80 usage-based - 20
ScienceLogic SL1
ScienceLogic SL1, now called Skylar One, monitors infrastructure across complex enterprise and government hybrid IT environments.
WebAPISelf-hosted6.4From $5 a month - 21
Mackerel
Mackerel is a cloud-based SaaS service for monitoring servers and infrastructure with teams.
Free planWebAPILinuxWindows6.3Free plan - 22
Performance Co-Pilot
Performance Co-Pilot (PCP) is a free, open-source toolkit and framework for system performance monitoring and analysis.
Free planAPILinuxmacOSSelf-hosted6.3Free plan - 23
Gyeeta
Gyeeta is a free, open-source observability tool for self-hosted Linux environments.
Free planWebAPILinuxSelf-hosted6.2Free plan - 24
Monit
Monit is a free, open-source utility for managing and monitoring Unix systems, with automatic responses to certain errors.
Free planLinuxmacOSSelf-hosted6.2Free plan - 25
SolarWinds Server & Application Monitor
WebAPILinuxSelf-hosted6.2