One of the most popular alternatives to Nagios is Zabbix, which is free and open source. Other popular alternatives are Beszel, Netdata, Datadog and Better Stack. There's no shortage of Network Monitors like Nagios, with more than 100 alternatives for Linux, Windows, the web, self-hosting and Mac.
Syne is a lightweight, modern application designed to simplify server management over SSH. It provides an intuitive interface for monitoring system performance, managing files, and executing essential controls without relying on a terminal for routine tasks.
India
ChaosSearch specializes in data analytics and indexing solutions for large-scale cloud object storage environments. The company is innovating in data indexing and search, making it easier to access and analyze vast amounts of application telemetry data efficiently.
United States
Monitor your email alerts service and detect that it's stopped working before your users complain.
ATSD is purpose-built for analyzing and reporting on massive volumes of time-series data collected at high frequency. Features include data analytics, visualization, data forecasting, reporting, alerting. All in one product built for big data.
Proactively monitor your websites and online services. Receive immediate notification when a problem is detected so you can quickly resolve the root cause and prevent potential escalation.
Slovenia
EU
Server monitoring with metrics, logs, alerts, and mobile access. One-command install, simple UI only setup and a clear pricing.
It works by combining Elasticsearch with two types of components, rule types and alerts. Elasticsearch is periodically queried and the data is passed to the rule type, which determines when a match is found.
UISP is Ubiquiti Network's management platform for all UISP, LTU, airMAX, airFiber devices. It also includes built in CRM and billing for ISPs.
United States
RPi-Monitor is a software designed to monitor the metrics from GNU/Linux system and connected peripherals. It store statistic into local Round Robin Database and embed a web server allowing to display current status and statistics.
Trafikito is free Linux servers monitoring solution which by default checks RAM, disk space, CPU and sends you an email if something is wrong.
LithuaniaEU
Health checking for any application and infrastructure written in any language inc. BASH, Python, PHP, Perl - riotkit-org/infracheck
