The Best Anomaly Detection Software in 2026

• 21 tools ranked
• Updated Oct 2026
• Researched from official sources
• Compare tools in this directory
• Sponsor this list

We researched anomaly detection software from official websites, including pricing pages, plan tables, and product documentation. Products are ranked on their ability to identify unusual behavior, value for money, and verified features across operational, financial, security, and business data use cases.

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

The full ranking 21 tools, best first

1. 1
   
   Progress Flowmon 9.0

   Best forNetwork traffic and capacity anomaly monitoring

   A network-focused platform for traffic visibility, anomaly detection and capacity planning.

   Pricing on request · 30-day trial Our Progress Flowmon verdict → + Compare Visit FlowmonFor vendors Sponsor this spot · #1 · $149/mo →
   9.0/10★★★★☆

   Visit Flowmon
2. 2
   
   ManageEngine NetFlow Analyzer 8.6

   Best forAffordable on-premises network flow monitoring

   Affordable on-premises flow monitoring with alerts, reporting, and security analytics.

   Free plan · 30-day trial Our ManageEngine NetFlow Analyzer verdict → + Compare Visit ManageEngineFor vendors Sponsor this spot · #2 · $99/mo →
   8.6/10★★★★☆

   Visit ManageEngine
3. 3
   
   Anodot 8.4

   Best forBroad business and operational metric monitoring

   Broad real-time anomaly detection with forecasting, correlation, and root-cause analysis.

   Pricing on request Our Anodot verdict → + Compare Visit AnodotFor vendors Sponsor this spot · #3 · $79/mo →
   8.4/10★★★★☆

   Visit Anodot
4. 4
   
   Securonix UEBA 8.3

   Best forEnterprise user and entity behavior analytics

   Enterprise UEBA with broad entity coverage, threat correlation, and automated response.

   Pricing on request Our Securonix UEBA verdict → + Compare Visit SecuronixFor vendors Sponsor this spot · #4 · $69/mo →
   8.3/10★★★★☆

   Visit Securonix
5. 5
   
   ExtraHop RevealX 8.2

   Best forNetwork detection and response teams

   A network-focused platform for real-time detection, forensics, and hybrid-environment visibility.

   • Real-time detection

   Pricing on request Our ExtraHop RevealX verdict → + Compare Visit ExtraHopFor vendors Sponsor this spot · #5 · $59/mo →
   8.2/10★★★★☆

   Visit ExtraHop
6. 6
   
   Anomalo 8.1

   Best forData teams monitoring complex data quality

   Anomalo combines unsupervised detection, validation, explanations, and lineage for complex data.

   • Anomaly explanations

   Pricing on request · 30-day trial Our Anomalo verdict → + Compare Visit Anomalo
   8.1/10★★★★☆

   Visit Anomalo
7. 7
   QD
   Quest Data Quality 7.9

   Best forEnterprise data-quality anomaly monitoring

   A broad enterprise suite for detecting, scoring and remediating data-quality issues.

   Pricing on request Our Quest Data Quality verdict → + Compare Visit site
   7.9/10★★★★☆

   Visit site
8. 8
   
   Corelight Open NDR 7.9

   Best forSecurity teams detecting network anomalies

   A network-focused NDR platform combining telemetry, detection, packet capture, and response integrations.

   • Anomaly explanations
   • Real-time detection

   Pricing on request Our Corelight Open NDR verdict → + Compare Visit Corelight
   7.9/10★★★★☆

   Visit Corelight
9. 9
   
   OpenSearch 7.9

   Best forOpen-source observability and anomaly detection

   A broad open-source observability platform for logs, metrics, traces, and anomaly detection.

   Open source Our OpenSearch verdict → + Compare Visit OpenSearch
   7.9/10★★★★☆

   Visit OpenSearch
10. 10
    
    Vectra AI Identity Threat Detection and Response 7.7

    Best forIdentity-focused threat anomaly detection

    Specialized identity threat detection with investigation and automated response for hybrid environments.

    Pricing on request Our Vectra AI Identity Threat Detection and Response verdict → + Compare Visit Vectra AI
    7.7/10★★★★☆

    Visit Vectra AI
11. 11
    
    Metaplane 7.6

    Best forCloud data teams needing affordable monitoring

    Affordable data monitoring with machine-learning detection and broad stack integrations.

    • Real-time detection

    Free plan · 14-day trial Our Metaplane verdict → + Compare Visit Metaplane
    7.6/10★★★★☆

    Visit Metaplane
12. 12
    
    PyOD 7.4

    Best forDevelopers building custom anomaly detectors

    A flexible Python toolkit for developers building custom anomaly detectors.

    • Anomaly explanations
    • Real-time detection

    Free plan Our PyOD verdict → + Compare Visit PyOD
    7.4/10★★★★☆

    Visit PyOD
13. 13
    A
    Anomalib 7.3

    Best forComputer-vision anomaly detection developers

    A focused open-source toolkit for developing and deploying image and video anomaly models.

    Open source Our Anomalib verdict → + Compare Visit Anomalib
    7.3/10★★★★☆

    Visit Anomalib
14. 14
    
    Soda 7.2

    Best forData-quality teams with contract-based monitoring

    A contract-focused platform combining data-quality checks, observability, and anomaly detection.

    Free plan Our Soda verdict → + Compare Visit Soda
    7.2/10★★★★☆

    Visit Soda
15. 15
    
    ObservabilityOS 7.1

    Best forSmall teams monitoring logs, metrics, and traces

    A flexible observability platform for small teams tracking logs, metrics, and traces.

    • Anomaly explanations
    • Real-time detection

    Free plan Our ObservabilityOS verdict → + Compare Try ObservabilityOS
    7.1/10★★★★☆

    Try ObservabilityOS
16. 16
    O
    OpenUBA 7.0

    Best forOpen-source entity behavior analytics

    A flexible open-source UEBA framework for teams that can operate Kubernetes.

    • Real-time detection

    Open source Our OpenUBA verdict → + Compare Visit OpenUBA
    7.0/10★★★★☆

    Visit OpenUBA
17. 17
    
    Axomaly 6.8

    Best forFree metric anomaly detection with explanations

    A free cloud service for metric anomalies, with baselines, explanations, and a REST API.

    • Anomaly explanations

    Our Axomaly verdict → + Compare Visit Axomaly
    6.8/10★★★☆☆

    Visit Axomaly
18. 18
    P
    PySAD 6.7

    Best forStreaming anomaly detection researchers

    A focused, self-hosted Python library for real-time sequential anomaly detection.

    • Real-time detection

    Free plan Our PySAD verdict → + Compare Visit PySAD
    6.7/10★★★☆☆

    Visit PySAD
19. 19
    R
    rrcf 6.6

    Best forDevelopers needing a focused streaming anomaly method

    A focused, self-hosted Python method for unsupervised streaming anomaly scoring.

    • Real-time detection

    Free plan Our rrcf verdict → + Compare Visit rrcf
    6.6/10★★★☆☆

    Visit rrcf
20. 20
    
    Darktrace / EMAIL 6.0

    Best forEmail threat and behavior detection

    Self-learning email threat detection with broad protection and contact-sales pricing.

    Pricing on request · 30-day trial Our Darktrace / EMAIL verdict → + Compare Visit Darktrace
    6.0/10★★★☆☆

    Visit Darktrace
21. 21
    CC
    Cisco Catalyst Center 5.5

    Best forCisco network assurance and anomaly response

    A strong Cisco network assurance hub, with anomaly detection as a secondary focus.

    Pricing on request Our Cisco Catalyst Center verdict → + Compare Visit Cisco
    5.5/10★★★☆☆

    Visit Cisco

No tools match those filters.

Compare at a glance

#	Tool	Paid from	Detection method	Supported data	Deployment options	Score
1	Progress Flowmon				Hybrid	9.0
2	ManageEngine NetFlow Analyzer	$172/unit usage-based				8.6
3	Anodot				Cloud	8.4
4	Securonix UEBA				Hybrid	8.3
5	ExtraHop RevealX		Hybrid	network packets, applications, transactions, devices, users, identities, services, and network metadata	Hybrid	8.2
6	Anomalo		Machine-learning	structured, semi-structured, unstructured, tables, documents	Hybrid	8.1
7	QDQuest Data Quality					7.9
8	Corelight Open NDR		Hybrid	network traffic, packet data, flow logs, cloud network traffic, protocol logs, files	Hybrid	7.9
9	OpenSearch	Free				7.9
10	Vectra AI Identity Threat Detection and Response					7.7
11	Metaplane		Machine-learning	row counts, freshness, schemas, column counts, cardinality, uniqueness, nullness, numeric statistics, custom SQL	Cloud	7.6
12	PyOD	Free	Hybrid	tabular, time series, graph, text, image, audio	Self-hosted	7.4
13	AAnomalib	Free	Machine-learning	images, videos	Self-hosted	7.3
14	Soda	$750/mo				7.2
15	ObservabilityOS	$29/mo	Hybrid	logs, metrics, traces	Hybrid	7.1
16	OOpenUBA	Free	Hybrid	Elasticsearch, Apache Spark, CSV	Self-hosted	7.0
17	Axomaly	Free	Statistical	Timestamped time-series values, optional metadata, business metrics, operational metrics, application metrics	Cloud	6.8
18	PPySAD	Free	Hybrid	univariate data; multivariate data; streaming data	Self-hosted	6.7
19	Rrrcf	Free	Machine-learning	multidimensional numerical and streaming time-series data	Self-hosted	6.6
20	Darktrace / EMAIL					6.0
21	CCCisco Catalyst Center					5.5

Head-to-head All 27 comparisons →

• Progress Flowmon vs Anodot
• Progress Flowmon vs Securonix UEBA
• Progress Flowmon vs ExtraHop RevealX
• Progress Flowmon vs Anomalo
• QDProgress Flowmon vs Quest Data Quality
• Progress Flowmon vs Corelight Open NDR
• ManageEngine NetFlow Analyzer vs Anodot
• ManageEngine NetFlow Analyzer vs Securonix UEBA
• ManageEngine NetFlow Analyzer vs ExtraHop RevealX

How we rank anomaly detection software

Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated 7 Oct 2026 · How we research and update