Almost all commercial software licenses include costs associated with maintenance on the license and support of the software. Maintenance is what's required to keep software updated to the latest version and get patch updates. Support is what's generally required for asking questions and getting SLAs on bug reports and fixes [...]

After more than 20 years of open source development, the OpenNMS project has attracted a large community of active users. While you can count on us for high-quality support and committed response times, we also encourage you to be involved in our open source community—a rich source of information and [...]