determined by the ratio of the frequency of environmental change to the rate of CFEngine execution. User base CFEngine is used in both large and small companies, as well as in many universities and governmental institutions. The largest reported datacenter under management of CFEngine is above a million servers, while sites as large as 40,000 machines are publicly reported (LinkedIn), while sites of several thousand hosts running under CFEngine are common. According to statistics from CFEngine AS, probably several million computers run CFEngine around the world, and users from more than 100 countries have been registered. Competitors Ansible Chef Otter Puppet Salt See also Comparison of open-source configuration management software Anomaly-based intrusion detection system Host-based intrusion detection system Rudder (software) References External links Configuration management Orchestration software Free network management software Multi-agent systems Software using the GPL license System administration Unix package management-related software