Open Source C Server Monitoring Tools

Pandora FMS is an enterprise-ready monitoring solution that provides unparalleled flexibility for IT to address both immediate and unforeseen operational issues, including infrastructure and IT processes. It uniquely enables business and IT to adapt to changing needs through a flexible and rapid approach to IT and business deployment. Pandora FMS consolidates all the needs of modern monitoring (ITOM, APM, BAM) and provides status and performance metrics from different operating systems, cloud, virtual infrastructure (VMware, Hyper-V, XEN), Docker containers, applications, storage and hardware devices such as firewalls, proxies, databases, web servers or routers. It's highly scalable (up to 2000 nodes with one single server), 100% web and with multi-tenant capabilities. It has a very flexible ACL system and several different graphical reports and user-defined control screens.

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.