ilert is a Germany-based alert management and on-call scheduling platform founded in 2017. It centralizes alerts from 100+ monitoring systems, with flexible scheduling, multi-channel notifications, and automatic escalation policies.
Founded in 2009 and headquartered in Nuremberg, Germany, Icinga is an open-source enterprise monitoring system forked from Nagios. Icinga 2 rewrites the core engine in C++ with a modern web UI and native distributed architecture.
Founded 2014, Cronitor is a SaaS platform specialized in Cron job monitoring and heartbeat detection. It supports any scheduled task type with REST API and 10+ language SDKs for 5-minute integration, serving over 10,000 development teams.
Checkmk by Tribe29 (Germany) is an enterprise-grade IT monitoring platform launched in Munich in 2008 and evolved from Nagios. It offers agentless (SNMP/WMI) and agent-based monitoring with powerful auto-discovery and built-in visualization.
AppSignal is an APM platform founded in 2015 in the Netherlands, specializing in performance monitoring and error tracking for Ruby, Elixir, Node.js, and Python backend applications.
Apex is a remote monitoring and management platform built for MSPs and enterprise IT teams, delivering cross-platform endpoint monitoring, automated patching, and AI-driven automation that boosts operational efficiency by up to 95%.
SolarWinds, founded in 1999 and headquartered in Austin, Texas, is a leading provider of IT monitoring and observability software. Its Orion platform covers network, server, database, storage, and ITSM, serving 300,000+ customers worldwide.
Founded in 1999 and headquartered in Saint Paul, Minnesota, USA, Nagios is the pioneer of IT infrastructure monitoring. Nagios Core is free and open source, while Nagios XI offers web management and reporting.
StatusCake is a UK-based website monitoring service founded in 2014, offering free uptime monitoring, SSL expiry alerts, domain expiry tracking, and status pages for personal site owners and small businesses.