Alternatives to Servers Alive

Checkmk

Checkmk suits teams monitoring infrastructure across cloud, hybrid, and data center environments, including servers, networks, and containers.

ManageEngine OpManager

OpManager suits teams monitoring network devices and servers in a self-hosted deployment.

Nagios XI

Nagios XI suits teams that want to host monitoring on their own Linux infrastructure and need configurable checks, notifications and access controls.

Netdata lists platform engineers, DevOps teams, SREs, developers, system administrators, CISOs, DBAs, network engineers, and MSPs among its audiences.

Glances suits people who want system statistics and process monitoring across supported systems, including remote views or exports.

Landscape suits teams administering large or growing Ubuntu estates across desktops, servers, cloud systems, and embedded devices.

Icinga

Icinga suits teams of any size that need self-hosted infrastructure monitoring, from small setups to large distributed environments.

IT operations, architects, SREs, SMEs, DevOps personnel, and developers needing application, infrastructure, and user-experience monitoring.

openITCOCKPIT

openITCOCKPIT suits teams that need to monitor infrastructure and applications across multiple operating systems and environments.

Paessler PRTG Network Monitor

Paessler describes PRTG as suited to small and medium IT infrastructures, with features for OT and IoT environments.

LogicMonitor

LogicMonitor suits enterprises, IT teams, and MSPs managing complex hybrid environments across Linux, Windows, cloud, and on-premises systems.

Sensu Go

Sensu Go is suited to enterprise DevOps and SRE teams that need to automate monitoring across varied infrastructure.

NetXMS

NetXMS suits teams monitoring networks, infrastructure, applications, servers, service-provider environments, payment systems, or industrial equipment.

Monit suits administrators who want self-hosted monitoring and automated maintenance for Unix systems.

PCP suits teams needing centralized monitoring for distributed processing, clusters, web-server farms, or large systems.

Site24x7 suits IT and DevOps teams monitoring mixed server infrastructure.

Opsview Cloud suits organizations monitoring infrastructure across on-premises, hybrid, cloud and container environments.

Prometheus

It suits teams that need open-source metrics collection, querying and alerting, including self-hosted deployments.

ManageEngine Applications Manager

It may suit teams monitoring applications and infrastructure across a hybrid environment, particularly those needing tracing, dependency mapping, user monitoring, or log correlation.