Freedom251 › Network Monitoring - Midmarket Software
Nagios Core
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Nagios Core | No node limitations · Open source under GPL v2 · Manual text-file configuration | Free |
As nagios.org lists them, read 4 Oct 2026. The maker's own page has the final word.
Facts from Nagios Core's own pages
- Alerts and automation
- It supports configurable notifications, escalation paths, notification dependencies, event handlers, service recovery actions, and maintenance scheduling. · nagios.org, 4 Oct 2026
- Company history
- Nagios says Ethan Galstad began the open-source Nagios Core engine in 1999. · nagios.org, 4 Oct 2026
- Configuration limit
- Core uses text-based configuration files and does not include the configuration wizards listed for Nagios XI. · nagios.org, 4 Oct 2026
- Extensibility
- Its plugin system supports custom checks, plugins written in languages such as Bash, Python, Perl, C, and PHP, and remote execution through NRPE or SSH. · nagios.org, 4 Oct 2026
- Host monitoring
- It monitors processor load, disk usage, memory, processes, and other system resources on Linux, Unix, and Windows hosts. · nagios.org, 4 Oct 2026
- Integrations
- The features page names Grafana, InfluxDB, Prometheus, PagerDuty, Slack, and ServiceNow among its integration options. · nagios.org, 4 Oct 2026
- Intended users
- The maker describes Core as suited to IT professionals comfortable with command-line configuration who want control without licensing costs. · nagios.org, 4 Oct 2026
- Network monitoring
- It can check network services and protocols including SMTP, POP3, HTTP, NNTP, ICMP, SNMP, FTP, SSH, TCP, and UDP. · nagios.org, 4 Oct 2026
- Purpose
- Nagios Core monitors IT infrastructure including servers, network devices, websites, applications, services, and custom metrics. · nagios.org, 4 Oct 2026
- Requirements
- The product page specifies a Linux-based operating system and lists Ubuntu, CentOS, Debian, and Red Hat Enterprise Linux versions as supported distributions. · nagios.org, 4 Oct 2026
- Security updates
- The 4.5.14 changelog lists fixes for vulnerabilities in notification macros, jsonquery.js, cmd.cgi, and the CSRF cookie. · nagios.org, 4 Oct 2026
- Support
- The product page lists community forums, documentation, manuals, a quick-start guide, FAQs, and video tutorials as Core resources. · nagios.org, 4 Oct 2026
- Web interface and data
- Nagios Core includes a CGI web interface and exposes status files, external commands, performance data, and an event broker module interface. · nagios.org, 4 Oct 2026
Where Nagios Core stands on Freedom251
- Network Monitoring - Midmarket Software#8 of 25
- Server Monitoring#14 of 38