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

Stable (current version: 1.8.17-1)

Development (current version: 1.9.93-1)

Stable Snapshots (Testing) (current version: 1.8.18-0.20120126.12)

Development Snapshots (current version: 1.10.1-0.20120127.1)

Bleeding Edge (Top-Of-Tree Git Snapshots) (current version: 1.11.0-0.20120126.1)

Obsolete (current version: 1.6.11-1)