Apps similar to OpenNMS Horizon include Zabbix, which is free and open source. Other options are Nagios, Datadog, Prometheus and Spiceworks. You're spoiled for choice with Network Monitors like OpenNMS Horizon: we list more than 50 alternatives for Linux, Windows, the web, self-hosting and Mac.
Agentless monitor covers most of the aspects of monitoring like JAVA / J2EE application monitoring, server monitoring, database monitoring, transaction monitoring, network monitoring, log monitoring and system monitoring and last, but not the least is available for free.
United States
LoggiFly is a lightweight tool that monitors Docker container logs for predefined keywords or regex patterns and sends notifications.
LANState is a simple NMS with the network topology mapping and device monitoring functions. Add hosts to a graphical network map and monitor their state in the real time. Receive failure notifications when hosts and services go down.
Russia
AggreGate Network Manager is an enterprise-grade IP network management, monitoring and supervision system based on AggreGate Device Management Platform.
Taiwan
