- Puppet is system administration — Automated, see Puppet can ease system administration tasks across the network for an introduction
- memcached - a distributed memory object caching system
- Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages.
- Nagios - The Industry Standard in IT Infrastructure Monitoring
- Zabbix - An Enterprise-Class Open Source Distributed Monitoring Solution
- Monit is a free open source utility for managing and monitoring, processes, files, directories and filesystems on a UNIX system. monitのRPMパッケージをビルドする(RPM packages for Red Hat, RHEL, CentOS and Fedora) Monit Recipe monitのrpmファイル作成 monitでプロセスを監視する
Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems.
Cacti is a complete network graphing solution designed to harness the power of RRDTool's data storage and graphing functionality.
MRTG - The Multi Router Traffic Grapher
- mtop/mkill - MySQL Monitoring Tools