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6 Best Mackerel Alternatives in 2026 — Free Options Included

Explore 6 alternatives to Mackerel — vetted by our editors with real user reviews, pricing, and feature comparisons.

A side-by-side look at 6 free Mackerel alternatives

Quick answer

For a quick answer, the leading Mackerel alternatives are PRTG Network Monitor, Nagios XI and LiveNX. PRTG Network Monitor ranks highest with a SpotScore of 9.8 and a 4.5★ rating. The table below lines up all 6 on score, rating, and price.

Choosing the right Mackerel alternative comes down to fit, and these 6 network monitoring software free alternatives cover a wide range of needs. We rank them by SpotScore, which blends verified satisfaction with market presence, then ratings and pricing. Each tool is editor-checked. Use the table to compare, then read each breakdown.

ProductSpotScoreRatingPricingBest for
PRTG Network MonitorMonitor your network with ease.9.8★★★★★ 4.5(332)FreeFree Trial · One-time licenseteams of all sizes
Nagios XIEmpower Your IT Decisions with Proactive Monitoring.9.5★★★★☆ 4.36(15)FreeFree Trial · Freemium · One-time license · Open-sourceteams of all sizes
LiveNXEfficiently monitor your network for peak performance.8.4★★★★★ 4.8(5)FreeFree Trial · Quotation Basedteams of all sizes
vRealize Network InsightOptimize network performance with total visibility.8★★★★☆ 4.38(8)FreeFree Trial · One-time licenseteams of all sizes
Trisul Network AnalyticsUncover network insights in real-time.7.9★★★★☆ 4.17(3)FreeFree Trial · One-time license · Quotation Basedteams of all sizes
ManageEngine NetFlow AnalyzerAnalyze, monitor, and troubleshoot complex networks easily.7.8★★★★★ 4.83(9)FreeFree Trial · One-time license · Quotation Basedteams of all sizes

9.8

SpotScore

PRTG Network Monitor - Network Monitoring Software

PRTG Network Monitor

Monitor your network with ease.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.5

332 verified reviews

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What is PRTG Network Monitor?

Network Monitor is a powerful and comprehensive network monitoring software for Windows and Linux systems. The PRTG Network Monitor offers continuous monitoring of all important parameters of servers, PCs, and other network equipment and notifies whenever a problem occurs or even predicts ...

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9.5

SpotScore

Nagios XI - Network Monitoring Software

Nagios XI

Empower Your IT Decisions with Proactive Monitoring.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.4

15 verified reviews

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What is Nagios XI?

Nagios XI is a powerful network monitoring platform designed to help organizations worldwide make important IT infrastructure decisions with confidence. Powerful integrated add-ons allow for distributed IT management, DevOps integration, and proactive problem resolution when things go wrong. It ...

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8.4

SpotScore

LiveNX - Network Monitoring Software

LiveNX

Efficiently monitor your network for peak performance.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.8

5 verified reviews

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What is LiveNX?

LiveNX is a new kind of network monitoring software that provides real-time status for network and high availability servers, and alerts user to impending outages and other issues before they affect business. LiveNX uses a unique centralized display with easy-to-understand icons and charts to ...

Read more about LiveNX
Free Trial·

LiveNX offers custom pricing plan

8.0

SpotScore

vRealize Network Insight - Network Monitoring Software

vRealize Network Insight

Optimize network performance with total visibility.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.4

8 verified reviews

Add to compare

What is vRealize Network Insight?

vRealize Network Insight provides complete visibility into IT environment through a web-based dashboard. With this software, user can centrally monitor network traffic and security information to better ensure that the systems are performing optimally. vRealize Network Insight is installed on ...

Read more about vRealize Network Insight
Free TrialTry Free →

7.9

SpotScore

Trisul Network Analytics - Network Monitoring Software

Trisul Network Analytics

Uncover network insights in real-time.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.2

3 verified reviews

Add to compare

What is Trisul Network Analytics?

Trisul is an extremely powerful monitoring and analytics tool that helps user to find and fix the performance and availability problems of networks and applications. It provides a vast number of rich, interactive dashboards that provide real-time visibility into network and application ...

Read more about Trisul Network Analytics
Free TrialTry Free →·

Trisul Network Analytics offers custom pricing plan

7.8

SpotScore

ManageEngine NetFlow Analyzer - Network Monitoring Software

ManageEngine NetFlow Analyzer

Analyze, monitor, and troubleshoot complex networks easily.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.8

9 verified reviews

Add to compare

What is ManageEngine NetFlow Analyzer?

NetFlow Analyzer is a web-based network monitoring software that helps organizations in monitoring, analyzing and troubleshooting complex networks. The software crawls through network devices to collect NetFlow data from them at regular intervals. It then stores them in a database for charting ...

Read more about ManageEngine NetFlow Analyzer
Free TrialTry Free →·

ManageEngine NetFlow Analyzer offers custom pricing plan

Mackerel vs its closest competitors

Mackerel competes with 6 other network monitoring software tools tracked on Spotsaas. The closest by feature overlap are PRTG Network Monitor, Nagios XI and LiveNX. Each is compared against Mackerel on rating, pricing and feature coverage below.

Tools similar to Mackerel

Searches for "sites like Mackerel" and "apps like Mackerel" land on the same shortlist as "Mackerel alternatives" — the 6 options below cover both, whether you want a like-for-like replacement or something lighter.

Why each Mackerel alternative is here

PRTG Network Monitor9.8Best for teams of all sizes

Clear interface makes network monitoring accessible for daily use.

Watch for: New users may need significant time to learn the full feature set without formal training.

Nagios XI9.5Best for teams of all sizes

Highly effective in monitoring large network end-to-end, providing detailed information on uptime, downtime, and device failures.

Watch for: Occasional app hangs affecting user experience.

LiveNX8.4Best for teams of all sizes

Real-time status alerts

Watch for: May require extensive configuration

vRealize Network Insight8Best for teams of all sizes

Comprehensive visibility

Watch for: Complex installation process

Trisul Network Analytics7.9Best for teams of all sizes

Real-time performance monitoring

Watch for: Steep learning curve

ManageEngine NetFlow Analyzer7.8Best for teams of all sizes

Web-based interface

Watch for: Requires internet access

Why teams look for a Mackerel alternative

The case for a Mackerel alternative often starts with gaps like these:

  • Complex setup process
  • May require technical expertise
  • Pricing may be high for small businesses

How to pick the right Mackerel replacement

The 6 network monitoring software free alternatives compare like this on the specifics: 6 offer a free tier; and ManageEngine NetFlow Analyzer is the highest rated at 4.83★ across 9 reviews.

How we score these.

Frequently Asked Questions (FAQs)

Stuck on something? We're here to help with all the questions and answers in one place.

The top-rated alternatives to Mackerel are ManageEngine NetFlow Analyzer (4.8★), LiveNX (4.8★), PRTG Network Monitor (4.5★). Compare all 6 alternatives side-by-side above.

When evaluating alternatives to Mackerel, prioritize: SLA Monitoring, Real Time Analytics, Diagnostic Tools, Baseline Manager, transparent pricing, free trial availability, and integrations with your existing tools. Use the filters above to compare by feature, budget, and team size.

Migration difficulty depends on how deeply Mackerel is integrated into your workflows. Most alternatives offer data export/import tools and dedicated onboarding support. We recommend narrowing to 2–3 options, running a free trial, and checking each vendor's migration guides before committing.

Finding the right Mackerel alternative for your team

Planning your switch from Mackerel

Leaving Mackerel is mostly about avoiding surprises. Export your data, check the new tool can import it, and confirm feature parity for what you actually use. Run a pilot before the full switch, and keep your Mackerel account open until migration wraps. The free tiers above let you trial without spending.

Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].