Open Source C Server Monitoring Tools

Pandora OPEN is a high-performance, 100% open-source monitoring ecosystem, born as the independent evolution of the Pandora FMS community branch after version 777. Licensed under GPLv2, it provides a modular and sovereign platform for supervising networks, servers, and applications without commercial dependencies. It features multi-platform agents, remote monitoring (SNMP, WMI, HTTP), GIS maps, and advanced visual dashboards. Entirely maintained by the community on GitHub, it ensures total transparency, technical flexibility, and absolute freedom for system administrators.

Nagios network monitoring software is a powerful, enterprise-class host, server, application, and network monitoring tools. Designed to be fast, flexible, and rock-solid stable. Nagios runs on *NIX hosts and can monitor Windows, Linux/Unix/BSD, Netware, and network devices.

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.

ProDashboard is a custom plugin for the Open Source server monitoring package called Nagios®. ProDashboard "watches" your Progress database and warns you when critical or serious errors are about to happen.

Rcon Controller: a SA:MP server administration tool. aims to provide real-time graphic/console monitoring / Instant managing. developed by CoolGuy.

S.M.I.T.H - Server Monitor & Identification Terminal Hypervisor The project aims to create universal server monitoring tool which allow administrator (after getting some skills) to keep an eye on every part of the system just by observing the screen.

SeMoS ( Server Monitoring System ) - Monitor your Linux server farm easy!

Using this program you can automate some everyday administrator's routines.As example module for Apache web-server monitoring is included.It monitors servers document root and if new folder created add it to vhosts and hosts file as new virtual host

VA-Cluster Manager is a large scale server monitoring and management tool. Providing a modular architecture for adding new protocols and monitoring technology, VACM is extremely scalable.

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xseg is a open source flexible server monitoring tool. As previously said its very flexible. xseg can be used in linux servers that runs services for public. You can run xseg and give extented server status info to your community.