Nagios XI vs Datadog Infrastructure Pricing (2026)
Compare / Nagios XI vs Datadog Infrastructure
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Team size
25 seats

Nagios XI vs Datadog Infrastructure

Network Monitoring pricing comparison · 2026

Nagios XI has a free plan and quote-based paid plans, while Datadog Infrastructure has a free plan, then $18–$27/mo.

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See pricing on each vendor's site
Above-the-fold path — each link opens the vendor's pricing page in a new tab.
Visit Nagios pricing
Free plan limits → Discount programs →
Visit Datadog pricing
Free plan limits → Discount programs →
Compare
2 products · Network Monitoring
Side-by-side · live
Nagios XI
Nagios XI offers a free tier for monitoring up to 7 nodes or 100 services, whichever limit
verified 3mo ago
View pricing →
Datadog Infrastructure
Datadog Infrastructure monitoring pricing starts at $18/host/month for the Pro plan (or $1
verified 11d ago
View pricing →
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Pricing model unknown
Pricing model unknown
no public list price found
Enterprise
$324/yr
year 1 license · flat plan price
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
No Vendr data
—
Not in Vendr's deal flow
Median annual
$641/yr
Vendr · n=13
REF · 01

Sources & confidence

Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.

Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources 9 sourced facts
7 hidden-cost · 2 review platforms
Last verified 3mo ago
Confidence Medium confidence
Sources 13 sourced facts
9 hidden-cost · 3 contract · Vendr median
Last verified 1w ago
Confidence Medium confidence
REF · 02

Plans at a glance

Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.

Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 03

Hidden costs

Each cost is severity-ranked, with the dollar range quoted from its source (Vendr, Reddit, TrustRadius, BBB, official docs) — never our estimate.

Beyond the sticker
Severity-ranked, sourced
5 documented
  • Linux Administrator Required for Master Node
    $50,000-$80,000
    1 source
  • Feature Restrictions in Standard Edition
    Varies by edition
    2 sources
  • Annual Maintenance and Support
    20–25%
    1 source
  • Support Tier Upgrades
    30–50%
    1 source
  • Professional Services
    $5,000 to $50,000 or more
    1 source
5 documented
  • Custom Metrics Overage Charges
    $0.05/metric
    1 source
  • Unpredictable Billing from Multiple SKUs
    50-300% of expected costs
    3 sources
  • New Feature Pricing During Contract Term
    10-30% of contract value
    2 sources
  • Log Ingestion and Retention Costs
    $1.70/million log lines
    1 source
  • APM and Tracing Costs
    20-100% of infrastructure costs
    2 sources
REF · 05

What users say

Aggregated, with sample sizes. We use whichever review platform has data.

User reviews
TrustRadius · Trustpilot · G2
TrustRadius
8.6out of 5 (46)
G2
4.5out of 5 (58)
Best for
General users
Watch out
Outdated and Complex Interface
No public ratings yet
Best for
Small projects
Watch out
Extremely complex and unpredictable pricing across multiple SKUs
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Nagios pricing
Free plan limits → Discount programs →
Visit Datadog pricing
Free plan limits → Discount programs →
License cost is computed from publicly listed plans (real math, list price × seats). Median annual cost is from Vendr's deal flow when available — see source badges. Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
Network Monitoring

Nagios XI

Free plan; paid plans by quote
2 plans · Free tier
Full pricing breakdown →
VS
Network Monitoring

Datadog Infrastructure

Free plan; paid $18–$27
/mo
3 plans · Free tier
Full pricing breakdown →

Nagios XI and Datadog Infrastructure both operate in the network monitoring category. This page compares their list pricing.

Plan-by-Plan Pricing

Plan Nagios XI Datadog Infrastructure
Standard Free /month Free /month
Nagios XI 2000-Node+ Custom $18 /month
Enterprise — $27 /month

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

Nagios XI 6 hidden costs

medium
Linux Administrator Required for Master Node $50,000-$80,000
low
Feature Restrictions in Standard Edition Varies by edition
high
Annual Maintenance and Support 20–25%
medium
Support Tier Upgrades 30–50%
high
Professional Services $5,000 to $50,000 or more
See all Nagios XI hidden costs →

Datadog Infrastructure 5 hidden costs

high
Custom Metrics Overage Charges $0.05/metric
critical
Unpredictable Billing from Multiple SKUs 50-300% of expected costs
medium
New Feature Pricing During Contract Term 10-30% of contract value
high
Log Ingestion and Retention Costs $1.70/million log lines
critical
APM and Tracing Costs 20-100% of infrastructure costs
See all Datadog Infrastructure hidden costs →

Continue researching

Nagios XI

Datadog Infrastructure

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