18.8
Checkmk monitors cloud, hybrid, and data center infrastructure, including containers, networks, and web, mail, and database servers.
Free planOpen sourceAndroidiOSWeb
Best Server Monitoring in 2026
Server monitoring tools watch hosts, services and system activity so you can spot issues and review performance. This category includes hosted, web, self-hosted and software options for Linux, Windows and macOS environments, plus API access. When choosing a tool for a Xiaomi, Redmi or POCO phone, check its Android support directly. Compare monitoring methods, metric retention, included hosts and support for server…
28.7
Netdata is an observability platform for monitoring infrastructure and investigating problems in real time.
Free planOpen sourceAndroidiOSWeb
38.3
Centreon is an IT monitoring platform for complex infrastructure spanning cloud environments and edge systems.
Free planOpen sourceWebAPILinux
- 4
ManageEngine OpManager
ManageEngine OpManager monitors and manages network infrastructure from a unified console.
Free planAndroidiOSWebAPI8.3From $95 a year - 5
Nagios XI
Nagios XI is monitoring software installed on a Linux server you own.
Free planWebAPILinuxmacOS8.1$2,595 one-time - 6
Glances
Glances is a free, open-source tool for viewing real-time system statistics and running processes across platforms.
Free planOpen sourceAndroidWebAPILinux8.0Free plan - 7
Paessler PRTG Network Monitor
Paessler PRTG Network Monitor monitors systems, devices, traffic, applications, and other infrastructure metrics from an on-premises installation…
Free planAndroidiOSWebAPI7.7From $200 a month - 8
openITCOCKPIT
openITCOCKPIT is an open-source monitoring platform for infrastructure and applications, including servers, virtual machines, network devices,…
Free planiOSWebAPILinux7.5From €1 a year - 9
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 - 10
NetXMS
NetXMS is an open-source solution for monitoring networks and infrastructure.
Free planAndroidWebAPILinux7.2Free plan - 11
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 - 12
ManageEngine Applications Manager
ManageEngine Applications Manager is a hybrid application and infrastructure monitoring product available for Android, iOS, Linux, web, and Windows.
Free planAndroidiOSWebLinux7.1From $395 a year - 13
Site24x7 Server Monitoring
Site24x7 Server Monitoring tracks performance and availability across on-premises, cloud, virtual, and hybrid servers.
AndroidiOSWebAPI7.1From $9 a month - 14
Canonical Landscape
Canonical Landscape is a systems management tool for administering Ubuntu desktops, servers, cloud instances, IoT devices, and other Ubuntu systems.
Free planWebAPILinuxSelf-hosted7.0From $6,861 a year - 15
Pandora FMS
Free planAndroidWebLinuxmacOS6.9From €0.51 a month - 16
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 - 17
LogicMonitor
LogicMonitor Envision brings metrics, logs, events, and traces together to monitor and troubleshoot infrastructure.
WebAPILinuxWindows6.8From $16 a month - 18
OpsDash
Free planWebAPILinuxSelf-hosted6.8From $12 a year - 19
FrameFlow
AndroidiOSWebWindows6.6 - 20
Prometheus
Prometheus is a free, open-source systems monitoring and alerting toolkit.
Free planWebLinuxmacOSSelf-hosted6.6Free plan - 21
Zabbix
Zabbix is an open-source monitoring and observability solution for infrastructure, applications, networks, and services.
WebAPILinuxmacOS6.6 - 22
eZ Server Monitor
Free planWebLinuxSelf-hosted6.5Free plan - 23
Opsview Cloud
Opsview Cloud monitors on-premises, hybrid, cloud, and containerized infrastructure through a single platform.
AndroidiOSWebAPI6.5 - 24
Beszel
Free planWebAPILinuxmacOS6.4Free plan - 25
WhatsUp Gold
WhatsUp Gold monitors availability and performance across networks, systems, applications, and cloud environments.
Free planWebAPISelf-hostedWindows6.4Free plan
Choosing well
Check the plan and price
A free plan is available from tools such as Beszel, Canonical Landscape, Checkmk, Cockpit Machines, eZ Server Monitor, Glances and Icinga. Open-source options include Beszel and eZ Server Monitor.
Paid pricing varies: LogicMonitor starts at $16 per month, eG Enterprise at $100 per month and Checkmk lists paid plans from €190 per month when billed annually. Some tools give pricing on request.
Use the trial period wisely
Trial periods differ by product. BizTalk360, Canonical Landscape, Checkmk and FrameFlow list 30-day trials; Icinga lists 60 days, eG Enterprise 21 days and LogicMonitor 15 days.
Use a trial to check the monitoring methods, host limits and metric retention that match your setup.
Match the monitoring scope
Compare included hosts and metric retention before choosing. Check whether the tool supports server auto-discovery, process monitoring and container monitoring if those are part of your setup.
The category compares monitoring method directly, so review how each option collects and presents server data.
Check platforms and access
Listed platforms include Linux, web, self-hosted, Windows, API and macOS. Confirm the exact platform combination you need, including whether an Android app is available for your phone or tablet.
A web interface or API may suit remote access, while self-hosted software can fit a Linux or Windows installation.
Questions people ask
Are free server monitoring tools available?
Yes. The category includes tools with free plans, including open-source choices such as Beszel and eZ Server Monitor.
Which monitoring features should I compare?
Compare monitoring method, metric retention, included hosts, server auto-discovery, process monitoring and container monitoring.
Can I run a monitor myself?
Self-hosted tools are represented in the category. Check the product's supported operating systems and deployment details.
Do paid tools offer trials?
Several paid or freemium tools list trials, with periods ranging from 15 to 60 days. Review the terms for the product you are considering.