Best Anomaly Detection Software in 2026
Updated
In short: Metaplane is ranked #1 of 19 as of 4 October 2026, ahead of OpenSearch and Anomalib. The best-ranked option with a free plan is OpenSearch. The lowest first paid tier on this page is ManageEngine NetFlow Analyzer at $172/mo.
Anomaly detection software is used to identify unusual patterns in the data you monitor. To compare options, look at supported data and detection method, then consider whether detection is real-time and whether anomaly explanations are available. Data retention, deployment options, and free-plan or paid-from details can also affect fit. Metaplane, OpenSearch, and Anomalib are among the entries to examine. Match the listed capabilities to the data you need to watch and the way you plan to deploy and review results.
19 anomaly detection software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Anomaly Detection Software, ranked on how quickly a newcomer can get going. 11 of the 19 on this page can be tried for free.
- 1 MetaplaneFree plan
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 2 OpenSearchFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 3 AnomalibFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 4 ManageEngine NetFlow AnalyzerPaid from $172/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 5 ObservabilityOSPaid from $292,499/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 6 PyODFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 7 SodaPaid from $750/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 8 AxomalyFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 9 PySADFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 10 Vectra AI Identity Threat Detection and Response
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 11 ExtraHop RevealX
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 12 Corelight Open NDR
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 13 Securonix UEBA
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 14 Darktrace / EMAIL
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 15 Anomalo
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 16 OpenUBA
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 17 rrcf
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 18 Anodot
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 19 Progress Flowmon
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which anomaly detection software is ranked first on The Geeks Club?
Metaplane is ranked #1 of 19 with a score of 7.6. OpenSearch is second and Anomalib third.
How many of these have a free plan?
9 of the 19 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, ManageEngine NetFlow Analyzer has the lowest first paid tier we found: $172/mo.
How is this list ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.