Nagios XI vs OneDollarDNS

Nagios XI plans

• Standard — 100 Nodes$2,595, paid once
• Enterprise — 100 Nodes$4,690, paid once
• FreeFree
• Standard$2,595, paid once
• Standard (100-Node)$2,595, paid once
• Enterprise$4,690, paid once

OneDollarDNS plans

• Domain monitoring$1 a month
• Frequent Monitoring add-on$1 a month
• Team Notifications add-on$5 a month

Pick Nagios XI if…

Nagios XI suits teams that want to monitor infrastructure from a Linux server they manage. It is also relevant to organizations that need self-hosted deployment, node-based licenses, or offline installation.

Pick OneDollarDNS if…

You want what its maker publishes above — check its page for the details.