The best free alternative to Datadog is Grafana, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Datadog and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Datadog are Zabbix, TrafficMonitor, Netdata and Prometheus.
Grafana provides a powerful and elegant way to create, explore, and share dashboards and data with your team and the world.
Gather and analyze accurate statistics and performance metrics, visualize it, get notified about current and potential issues without delay, and take advantage of our time-tested professional development and support.
TrafficMonitor is a network monitoring suspension window software in Windows. It can display the current network speed, CPU and memory usage. It also support the functions of display in the taskbar, change skin and historical traffic statistics.
Netdata collects metrics per second and presents them in beautiful low-latency dashboards. It is designed to run on all of your physical and virtual servers, cloud deployments, Kubernetes clusters, and edge/IoT devices, to monitor your systems, containers, and applications.
Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Since its inception in 2012, many companies and organizations have adopted Prometheus, and the project has a very active developer and user community.
Nagios is a powerful monitoring system licensed under Nagios Enterprises that helps organizations identify and resolve IT infrastructure issues.
Graylog is a powerful Security Information and Event Management (SIEM) solution offering a robust log analytics platform that simplifies the collection, search, analysis, and alerting of all types of machine-generated data.
Easily visualize data pushed into Elasticsearch from Logstash, es-hadoop or 3rd party technologies like Apache Flume, Fluentd, and many others.
Wazuh is a free and open source platform used for threat prevention, detection, and response. It is capable of protecting workloads across on-premises, virtualized, containerized, and cloud-based environments.
Beszel is a lightweight server monitoring platform that includes Docker statistics, historical data, and alert functions.
Splunk is software that provides unique visibility across your entire IT infrastructure from one place in real time. Only Splunk enables you to search, report, monitor and analyze streaming and historical data from any source.
An open source observability platform: Unify session replays, logs, traces, and errors – all without the Datadog price tag.
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Zabbix does not work off of the StatsD / Graphite basis, requires an agent on each monitored instance (instead of sending simple updates via UDP, or HTTP), Zabbix cannot adapt to dynamic infrastructure environments.