OpenNMS is available for most RPM-based distributions through Yum. Quick-start instructions are available on the OpenNMS wiki here.

Stable (current version: 1.10.9-1)

Development (current version: 1.11.90-1)

Stable Snapshots (Testing) (current version: 1.10.10-0.20130522.1)

Development Snapshots (current version: 1.11.91-0.20130522.1)

Bleeding Edge (Top-Of-Tree Git Snapshots) (current version: 1.13.0-0.20130523.1)

Obsolete (current version: 1.8.17-1)