Opsview
Belgium
Opsview is enterprise network and application monitoring software designed for scalability, flexibility and ease of use. Opsview has been in development since 2003 and is released under the GNU GPL license.
Opsview is a fully integrated monitoring tool that incorporates popular Open Source software including Nagios, Net-SNMP and RRDtool. The Catalyst web framework provides an extensible monitoring and configuration user interface.
Opsview software is supported on Linux (Debian, CentOS, RHEL and Ubuntu) and Solaris 10. It will monitor all common operating systems including Windows.
Site Link: http://www.opsview.org/