| Feature | Nagios Core | Nagios XI Standard | Nagios XI Enterprise | |---------|-------------|--------------------|----------------------| | License | GPL (free) | Commercial, perpetual | Commercial, perpetual | | Web GUI | Limited (third-party) | Full wizard-based | Full + mobile | | Configuration | Manual flat files | Web interface | Web + API | | Support | Community | Email + chat + ticket | Priority support | | High availability | Manual | No | Yes | | REST API | No | No | Yes | | Reports | Basic | Standard | Advanced + capacity planning |
A one-time purchase that grants a lifetime right to use that specific version, with optional annual maintenance for updates and support.
There are several types of Nagios XI licenses available, including: