A curated list of amazingly awesome tools, services and other shiny things for monitoring and analyze everything.

Complex infrastructure software

• Zabbix - Real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices
• Shinken - Another monitoring framework.
• Nagios - Computer system, network and infrastructure monitoring software application.
• check_mk - Collection of extensions for Nagios.
• Opsview - Based on Nagios 4, Opsview Core is ideal for small IT and test environments.
• Centreon - IT infrastructure and application monitoring for service performance.
• Naemon - Network monitoring tool based on the Nagios 4 core with performance enhancements and new features.
• Icinga 2 - A Nagios like monitoring system, rewritten and expanded.
• openITCOCKPIT - Powerful open-source monitoring tool built upon Naemon or Nagios, featuring seamless integration with Grafana, an array of comprehensive reports, and visualizations.
• Sematext Cloud - Infrastructure and log monitoring with service and log auto-discovery. Basic plan is free.

Dashboards

• Grafana - The first really good dashboard for displaying metrics.
• Dash - A low-overhead monitoring web dashboard for a GNU/Linux machine.
• Munin - Networked resource monitoring tool.
• Adagios - Web based Nagios configuration interface.
• Thruk - Multibackend monitoring web interface with support for Naemon, Nagios, Icinga and Shinken.
• Uchiwa - Simple dashboard for the Sensu monitoring framework.
• Monit - Small Open Source utility for managing and monitoring Unix systems.
• Netdata - Troubleshoot slowdowns and anomalies in your infrastructure with thousands of metrics, interactive visualizations, and insightful health alarms.

Uptime

• BetterUptime - Free for 10 monitors, checked every 3 minutes, improved incident management capabilities
• Freshping - Free for 50 monitors, checked every 1 minutes, supports websocket monitoring
• Monitive - Free for 1 service, checked every 10 minutes with unlimited email & twitter alerts
• UptimeRobot - Free for 50 monitors, checked every 5 minutes
• UpTime.onl - Free for 10 URLs, checked every 5 minutes
• UpTime360 - checked every 5 minutes. Monitor server, website, blacklist, custom services and publish status pages Get notified instantly on popular notification channels like - Slack, Twitter, Email, SMS (Twillo) and Pushover
• PingRobot - Free for 50 monitors, checked every 5 minutes
• Nodown - Free for 5 probes, with email monitoring
• elmah.io - Uptime monitoring combined with application error logging
• StatusList.app - Uptime monitoring with debug details and hosted status page in one dashboard
• Sematext Synthetics - Website uptime, API, and SSL certificate monitoring. Includes status pages and scriptable multi-page user transaction monitoring, etc.

Application Performance monitoring

• NewRelic - Complex service for both application and infrastructure monitoring
• DataDog - Complex service for both application and infrastructure monitoring
• OverOps - OverOps provides Automated Root Cause (ARC) analysis to reduce the time to identify and fix critical production application errors.
• AppSignal - Catch errors, track performance, monitor hosts, detect anomalies — all in one tool.

• Matomo - Take back control with Matomo – a powerful web analytics platform that gives you 100% data ownership.
• Heap Analytics - Easy event tracking without coding
• Screpy - Screpy is a web analyzer and monitoring tool. Its powered by Google Lighthouse.
• Shynet - Modern, privacy-friendly, and cookie-free web analytics.

• Sentry - Application monitoring, event logging and aggregation.
• Bugsnag - Application monitoring, event logging and aggregation.

• Banshee - Real-time anomalies(outliers) detection system for periodic metrics

• Brubeck - Statsd-compatible stats aggregator written in C
• Loggly - Aggregate & analyze logs from any source
• Logit.io - Centralise logs and metrics using the ELK Stack, Grafana & Open Distro.
• Sematext Logs - Log monitoring with log auto-discovery and alerting; comes with out of the box dashboards, pipelines for transforming, masking, dropping, sampling log events and more. Basic plan is free.

• Moira - Most powerful alerting system, backed by Graphite.
• Alerta - Distributed, scaleable and flexible monitoring system.
• Flapjack - Monitoring notification routing & event processing system.
• Seyren - An alerting dashboard for Graphite.

Tools for databases

• Anemometer - MySQL Slow Query Monitor

Databases

• Graphite - More, than a time series database. And so awesome using with Grafana.
• Prometheus - Time series database for real-time monitoring and alerting
• InfluxDB - Time-series database built from the ground up to handle high write and query loads
• Levitate - A Managed Time Series Metrics and Events Warehouse built to handle High Cardinality data.

• Cacti - Web-based network monitoring and graphing tool.
• Observium - SNMP monitoring for servers and networking devices. Runs on linux.
• LibreNMS - Fork of Observium.
• Fluere - Versatile network interface monitoring and analysis tool, capable of capturing network packets in pcap format, NetFlow data. supports lua based plugins