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.
KeyOS is an integrated IT management platform compliant with the principles behind ISO 20000. Easily expandable through a plugins system, it provides a wide set of management consoles and dashboards, and interoperability with other tools used by system administrators. It provides a Windows and Linux agent to provide inventory and monitoring of hardware assets, a Centreon-Nagios connector, monitoring for anti-virus and backup programs, remote assistance, a help-desk and ticketing system with request routing, escalation, and SLA management, VoIP integration, automated translation, time-sheets, and intervention reports, and more.