Open Source ChromeOS Server Monitoring Tools

Komari is a lightweight, self-hosted server monitoring solution designed to deliver simple and efficient infrastructure visibility with minimal resource overhead. The platform uses a lightweight agent to collect performance data from monitored nodes and presents the results through a clean web interface. Its architecture emphasizes ease of deployment and full data ownership, making it attractive for users who prefer private monitoring environments over managed services. Komari is designed to scale across servers of different sizes while maintaining low CPU and memory consumption. The dashboard provides real-time status views that allow administrators to quickly assess system health and uptime. Overall, Komari targets developers, homelab operators, and small infrastructure teams seeking a straightforward monitoring tool without the complexity of enterprise observability stacks.

LDAP Directory Server Monitoring tool with focus on 389 DS / Red Hat / Sun / Oracle ODSEE and Open LDAP. IBM Tivoli and Novell eDirectory. Other Directory Services are also supprted.

This shell script prints short and uniform information about OS such as: CPU, RAM, OS name and version, kernel version, hostname, system load, current processes, network interfaces, total logged in users, hard disks, runlevel, etc. No root or any special superuser's rights are required. Runs under Linux, Android (Termux), Windows (Msys2 and Cygwin), FreeBSD, NetBSD, DragonFly BSD, OpenBSD and other Unix-like systems.

The Amenetet Monitoring Service monitors remote services which register with it, heart beats are used in both directions to monitor the health of remote services. Remote services maintain a lease with Amentet and renew that lease regularly. Amentet then pings back to the remote service to monitor its health. Remote Services can monitor multiple objects internally, when "pinged" by Amentet, if any of these objects has disappeared an exception is thrown back with the list of missing objects. Amentet will store events in a local Db which can be viewed using the Web interface and as events occur alerts will be raised which can be sent to SNMP Trap daemon and/or SMTP and/or SMS. The service uses Spring Security Framework for access control and can be configured to use any Authentication Authorization system supported by the Spring Security Framework.

LiMon (Linux Monitor) is a free/open/libre multiplataform real time Linux monitor written in C/C++, and other languages. Monitor of server's relevant aspects, such as services, temperature, CPU, memory and disk usage, etc.

Nibbler is a simple to use server monitoring system - simpler and more flexible than Nagios it is designed for small business to monitor services on many hosts. Friendly web based interface which uses web standards.

PHPq3scan scan for a pre-configured list of Quake 3 servers and report server informations, actual map, actual players, scores & pings. Per/user server list - Themes - Server Monitoring - OSP colors Admin of DB - Master Servers query - Update batch pag

SerMon is an Open Source Server-Side (PHP) Server Monitor. SerMon uses plugins to check your server and to send notifications. Easy to develop plugin.

The StackCollect SCM is written in Python and is free to download, more advanced features can be purchased from StackCollect. Monitored Server Platforms Include: Windows Server 2012 R2 Monitored Database Platforms Include: PostgreSQL Microsoft SQL Server MariaDb MySQL

Detailed server monitoring and player stat tracking, using a SQL database for longterm/cumulative storage.

WatchTower is a cloud server monitoring and management tool. This is actually a suite of tools that includes a dashboard and associated RESTful web services required for managing the servers and services. The dashboard uses PHP/MySQL (requires php5+), html, and css. It's all open source and very easy to work with and make changes. The client I'm using is included and is written in python. Currently tested with Python 2.4 and 2.6, but should work with any version. I'm not using anything special. My plans also include monitoring/managing of Windows servers through the same python client, but compiled into a working exe, but I will work on that when the Linux client is finished first.

eXtremail manager is a php based SMTP/POP server manager. Specificly for the eXtremail server. It offers the server admin many ways to monitor server activity and add/edit/delete users and domains.

ngxtop is a command-line monitoring utility that provides real-time analytics for Nginx and similar web server access logs using a top-style interface. Instead of relying on heavy monitoring stacks, it parses live log streams and produces immediate insights into request rates, status codes, bandwidth usage, and endpoint activity. The tool is particularly useful for troubleshooting traffic spikes or diagnosing performance issues during active incidents. It automatically detects the access log location and format in many cases, enabling quick deployment with minimal configuration. Users can also customize queries, grouping logic, and filters to analyze specific traffic patterns or metrics. By combining the familiarity of the UNIX top paradigm with flexible log parsing, ngxtop offers a lightweight yet powerful approach to real-time web server observability.

The welofunc project will develop a load and fuctional test tool for web applications with special focus on J2EE applications. Besides load and functional tests server monitoring will be included (CPU load, memory usage of the J2EE application server)