CentOS is an Enterprise-class Linux Distribution derived from sources freely provided to the public by a prominent North American Enterprise Linux vendor.
op5 System 3.0 is based on CentOS 5.
A flexible and highly scalable system logging application that is ideal for creating centralized and trusted logging solutions. op5 LogServer extension is based on Syslog-NG
The Apache HTTP Server Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows NT.
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op5 System 3.0 is based on CentOS 5.