Switch to Nagios XI: The Proven PRTG Alernative

Break free from PRTG subscriptions. Nagios XI gives you perpetual licenses, unlimited monitoring, on-premises control, and complete data sovereignty — with predictable costs and enterprise-grade flexibility.

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Why IT Teams Choose Nagios XI Over PRTG

Predictable Pricing

End subscription escalation with Nagios perpetual licensing. One purchase, lifetime value. No surprise increases, no forced renewals.

True On-Premises Control

Deploy anywhere – data centers, private clouds, air-gapped networks. Zero internet dependency, zero SaaS downtime, with complete ownership.

Unlimited Checks Per Device

Monitor unlimited metrics per device. PRTG charges per sensor; Nagios XI charges per device with no check limits.

Advanced Automation & Workflows

Automate discovery, classification, alerting, and remediation. Event handlers execute corrective scripts when state changes occur.

Take Control of Your Monitoring Costs

Planning a move from PRTG? Talk with our team to see how Nagios XI can fit your environment and reduce long-term costs.

PRTG vs Nagios XI Pricing Comparison

PRTG operates on a subscription-only model for new customers (since July 2024) with mandatory three-year commitments, significantly increasing long-term costs. Nagios XI offers perpetual licensing that often costs less than a single year of comparable PRTG subscription pricing. With optional maintenance for updates and support, organizations retain full ownership while maintaining predictable expenses.

Monitoring Scale	PRTG Annual	PRTG Over 5 Years	Nagios XI Avg. Annual*	Nagios XI Over 5 Years**
100 devices PRTG 1000 vs Nagios XI 100-Node	$3,900/year	$19,500	$2,202/year	$11,011
200 devices PRTG 2500 vs Nagios XI 200-Node	$8,100/year	$40,500	$3,651/year	$18,259
500 devices PRTG 5000 vs Nagios XI 500-Node	$14,196/year	$70,980	$7,210/year	$36,051
1,000 devices PRTG 10000 vs Nagios XI 1000-Node	$17,904/year	$89,520	$12,517/year	$62,587

Pricing is based on current 2026 rates. Future year increases are not factored into projections. Nagios XI maintenance typically sees modest annual increases, while PRTG subscription rates may change over time.

*Nagios XI Avg. Annual: Average annual cost over 5 years.

**Total Cost Over 5 Years: Perpetual license (Year 1) + 4 years optional maintenance renewals for comparison purposes.

Disclaimer: This page highlights Nagios XI as an alternative to PRTG Network Monitor. Information was compiled from publicly available sources, including PRTG’s website and documentation, as of February 2026. Every effort has been made to ensure accuracy, but the information is provided “as is” without warranty. Nagios Enterprises is not affiliated with Paessler AG and is not responsible for any changes to PRTG’s products or pricing after the publication date. PRTG is a registered trademark of Paessler AG.

Pricing comparisons use publicly available PRTG pricing and standard Nagios XI pricing. Multi-year projections assume current rates and do not account for future increases. Actual prices may vary based on volume discounts, regional pricing, or promotions. Contact sales for a personalized quote. For the latest PRTG pricing, visit PRTG Pricing (Feb 2026).

See Why Nagios XI Is the Better Alternative to PRTG

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