Best SIEM Software in 2026
Updated
In short: Elastic Security is ranked #1 of 18 as of 2 October 2026, ahead of UTMStack and nano SIEM. The best-ranked option with a free plan is Wazuh. The lowest first paid tier on this page is Microsoft Defender for Business at $3/mo.
18 siem software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Free ingestion limit | |
|---|---|---|---|---|---|---|---|---|
| 1 | Elastic Security | 8.8 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 2 | UTMStack | 8.3 | RecognisedAPIDocumented | $238.80/mo | Yes | 238.8 /mo | — | View |
| 3 | nano SIEM | 7.7 | RecognisedAPIDocumented | $26/mo | Yes | 29 /mo | — | View |
| 4 |  Wazuh | 7.5 | RecognisedAPIDocumented | $571/mo | Yes | 571 /mo | — | View |
| 5 |  Vigil | 7.2 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 6 | Securonix Unified Defense SIEM | 6.6 | RecognisedAPIDocumented | — | — | — | — | View |
| 7 | Seceon Open Threat Management | 6.6 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 8 | NetWitness Platform | 6.4 | RecognisedAPIDocumented | — | — | — | — | View |
| 9 | Panther | 6.3 | RecognisedAPIDocumented | — | — | — | — | View |
| 10 | Hunters | 6.2 | RecognisedAPIDocumented | — | — | — | — | View |
| 11 | Sumo Logic | 6.2 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 12 | Splunk Enterprise | 6.1 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 13 | MaxPatrol SIEM | 6.0 | RecognisedAPIDocumented | — | — | — | — | View |
| 14 |  LogSentinel SIEM | 5.6 | RecognisedAPIDocumented | — | — | — | — | View |
| 15 | ManageEngine Log360 | 5.6 | RecognisedAPIDocumented | — | No | — | — | View |
| 16 | Blumira | 5.2 | RecognisedAPIDocumented | — | No | 12 /mo | — | View |
| 17 |  SolarWinds Security Event Manager | 4.8 | RecognisedAPIDocumented | — | No | — | — | View |
| 18 |  Microsoft Defender for Business | 4.7 | RecognisedAPIDocumented | $3/mo | — | — | — | View |
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 siem software is ranked first on Inferse?
Elastic Security is ranked #1 of 18 with a score of 8.8. UTMStack is second and nano SIEM third.
How many of these have a free plan?
4 of the 18 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Microsoft Defender for Business has the lowest first paid tier we found: $3/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.