MachDB is machine database to catalog of the changing state of your hosts. It consists of a database, an aggregator, an XML spec, and some example information gathering scripts. Along with a Web UI, these form the basis of a system that will allow you to catalog the current and historical state of the hosts in your infrastructure. It has been designed with scale in mind, and the goal is to support 10k hosts. It is being actively developed and is used in production at a few organizations.
Pandora FMS is a software-monitoring tool created for all kinds of companies. It is specially designed for large environments, and works by first managing servers, applications, and communications, and then notifying clients of problems and failures before they occur. Pandora FMS also includes a configurable report system that evaluates and notifies the client on the level of fulfillment and compliance of their systems. It supports all kinds of technologies unifying the management tools of your system, such as performance monitoring, network monitoring, and availability management. Pandora FMS makes your company management more agile and improves your process performance.
Collax Business Server is an all-in-one Linux server for small- and medium-sized businesses. It delivers all the important network services within a heterogeneous business environment for communication, infrastructure, compliance, groupware, and storage, all in a reliable and secure way which is easy to manage. It also provides essential security functions such as firewalling and virus and spam filtering, to protect against hacker attacks, viruses, and unsolicited email messages.