Cabot - Self-hosted, easily-deployable monitoring and alerts service - like a lightweight PagerDuty

•    Python

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Cabot is a free, open-source, self-hosted infrastructure monitoring platform that provides some of the best features of PagerDuty, Server Density, Pingdom and Nagios without their cost and complexity.

django graphite monitoring devops alerting pager-duty alerts cluster-management system-monitoring incident-management

OSSEC - Host-based Intrusion Detection System

•    C

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OSSEC is a full platform to monitor and control your systems. It mixes together all the aspects of HIDS (host-based intrusion detection), log monitoring and SIM/SIEM together in a simple, powerful and open source solution.

intrusion-detection siem threat-intelligence security-analytics threat-analytics monitoring

Server Watch & Alert

•    

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Monitors servers and responds to failures. Currently supports HTTP GETs and e-mail alerts.

monitoring server-alerts server-monitoring web-monitoring

OpenWIPS-ng - Wireless Intrusion Prevention System

•    C

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OpenWIPS-ng is an open source and modular Wireless IPS (Intrusion Prevention System). It is composed of three parts: Sensor(s): "Dumb" devices that capture wireless traffic and sends it to the server for analysis. Also responds to attacks. Server: Aggregates the data from all sensors, analyzes it and responds to attacks. It also logs and alerts in case of an attack. Interface: GUI manages the server and displays information about the threats on your wireless network(s).

intrusion-detection network-security-monitoring security ids ips nsm network-monitoring

skydive - An open source real-time network topology and protocols analyzer

•    Go

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Skydive is an open source real-time network topology and protocols analyzer. It aims to provide a comprehensive way of understanding what is happening in the network infrastructure. Skydive agents collect topology informations and flows and forward them to a central agent for further analysis. All the informations are stored in an Elasticsearch database.

networking network-topology flow monitoring traffic-analysis traffic-monitoring metrics packet-sniffer packet-analyzer pcap ebpf

Statping - Status Page & Monitoring Server

•    Go

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Statping is a Web and App status monitoring for any type of Project. It is an open source server to monitor your web applications and all other HTTP, TCP, UDP, ICMP and gRPC services. Statping will automatically fetch the application and render a beautiful status page with tons of features for you to build an even better status page. This Status Page generator allows you to use MySQL, Postgres, or SQLite on multiple operating systems.

docker monitoring notifier statuspage prometheus uptime prometheus-exporter website-monitor golang-plugin application-monitoring status-page server-monitor

Centreon - Global IT monitoring

•    Perl

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Centreon is one of the most flexible and performant monitoring software. It is based upon the most effective Open Source monitoring engine Nagios. Centreon gathers functionalities that are essential to the monitoring of critical infrastructures.

monitoring sys-admin-tools tools system-monitoring

Pandora FMS - Flexible Monitoring System

•    C

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Pandora FMS is a performance and availability monitoring system, ready for big environments. It uses agents for local monitoring and can do several kinds of remote network monitoring. It watches your systems and applications, and allows you to know the status of any element of those systems.

monitoring sys-admin-tools tools system-monitoring

icinga2 - The heart of our monitoring platform with a powerful configuration language and REST API.

•    C++

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Icinga 2 is an open source monitoring system which checks the availability of your network resources, notifies users of outages, and generates performance data for reporting. Scalable and extensible, Icinga 2 can monitor large, complex environments across multiple locations.

icinga monitoring notification cluster metrics elastic graylog influxdb graphite opentsdb rest-api tls distributed-monitoring performance

Skywalking - APM, Application Performance Monitoring System

•    Java

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SkyWalking is an APM (application performance monitor) system, especially designed for microservices, cloud native and container-based (Docker, Kubernetes, Mesos) architectures. SkyWalking is an open source APM system, including monitoring, tracing, diagnosing capabilities for distributed system in Cloud Native architecture. It supports to collect telemetry (metrics, traces, and logs) data from multiple sources and multiple formats.

web-performance metrics logging prometheus zabbix apm dapper service-mesh observability distributed-tracing open-telemetry application-performance tracing

Meerkat Monitor - Network Monitoring Tool

•    Java

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Meerkat-Monitor is a simple yet powerful monitoring tool for applications and services. It’s good for local or cloud environment deployment. Supports monitoring of several services like Databases, Websites, Network Sockets, Webservices and SSH. It’s very dynamic and allows you to take advantage of monitoring through several types of tasks (like executing DB queries or remote commands).

network monitoring network-tools

eZ Server Monitor - Script for Monitoring Linux servers

•    PHP

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eZ Server Monitor (eSM) is a script for monitoring Linux servers. It is available in Bash version and Web application. In its Web version, eSM is a PHP script which provides a web page containing information such as the operating system, the number of users connected to the server, the system load, CPU, memory RAM, available disk space, bandwidth usage, and especially the port monitoring services such as FTP, SMTP, Web, etc.

server-monitoring monitoring system-admin monitoring-tools

Naemon - Networks, Applications and Event Monitor, a Nagios fork

•    C

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Naemon is the new monitoring suite that aims to be fast, stable and innovative while giving you a clear view of the state of your network and applications. The Naemon core is a network monitoring tool based on the Nagios 4 core, but with many bug fixes, new features, and performance enhancements. If you today use Nagios, you should switch to Naemon to get bugfixes, new features, and performance enhancements.

monitoring network-monitoring system-monitoring tools

LibreNMS - Network monitoring system

•    PHP

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LibreNMS is an autodiscovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems including Cisco, Linux, FreeBSD, Juniper, Brocade, Foundry, HP and many more.

network monitoring rrd librenms network-monitoring

Sguil - The Analyst Console for Network Security Monitoring

•    Tcl

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Sguil (pronounced sgweel) is built by network security analysts for network security analysts. Sguil's main component is an intuitive GUI that provides access to realtime events, session data, and raw packet captures. Sguil facilitates the practice of Network Security Monitoring and event driven analysis.

intrusion-detection network-security-monitoring security ids ips nsm network-monitoring

Wazuh - Host and endpoint security

•    C

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Wazuh helps you to gain deeper security visibility into your infrastructure by monitoring hosts at an operating system and application level. This solution, based on lightweight multi-platform agents, provides the capabilities like Log management and analysis, File integrity monitoring, Intrusion and anomaly detection, Policy and compliance monitoring.

ossec security loganalyzer compliance monitoring intrusion-detection policy-monitoring openscap security-hardening ids pci-dss file-integrity-management log-analysis vulnerability-detection incident-response threat-detection

Zabbix - distributed monitoring solution

•    C

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Zabbix is an enterprise-class open source distributed monitoring solution. It is highly scaleable, capable of monitoring more than 100,000 devices and servers. A Zabbix agent can also be installed on UNIX and Windows hosts to monitor statistics such as CPU load, network utilization, disk space, etc. It also supports agentless monitoring via SNMP, TCP and ICMP.

monitoring sys-admin-tools tools system-monitoring

OpenNMS

•    Java

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OpenNMS is the world's first enterprise grade network management platform developed under the open source model. A Java/XML-based Distributed Network & Systems Management platform.

snmp network-management monitoring http-monitor

QuickMon

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QuickMon is a small but extendable monitoring system to monitor services/resources and raise alerts.

agent alert alerts monitor monitoring monitoring-tool

Kapacitor - Open source framework for processing, monitoring, and alerting on time series data

•    Go

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Kapacitor is a open source framework for processing, monitoring, and alerting on time series data. Kapacitor imports (stream or batch) time series data, and then transform, analyze, and act on the data. It uses Telegraf to collect system metrics on your local machine and store them in InfluxDB.

monitoring data-processing data-analysis alerts streaming data-streaming streaming-analytics