# Best Free SIEM Software Solutions 2026 | Capterra

> Find and compare the 2026 best free SIEM software solutions, using our interactive tool to quickly narrow your choices based on businesses like yours.

Source: https://www.capterra.com/siem-software/s/free

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# Best SIEM Software for free

For more information consult our [SIEM Buyers Guide](#buyers-guide-content)

[4.7 (26)](https://www.capterra.com/p/175185/Log360/reviews/)

Log360 is a unified SIEM software offering log management, threat detection, and compliance across on-prem and cloud environments. [Learn more about ManageEngine Log360](https://www.capterra.com/p/175185/Log360/)

[5.0 (16)](https://www.capterra.com/p/10022288/Logmanager/reviews/)

Logmanager is a lightweight SIEM, offering all the essential features for security monitoring, effortless management, and flexibility. [Learn more about Logmanager](https://www.capterra.com/p/10022288/Logmanager/)

0.0 (0)

Thalian is an AI-powered IT intelligence software that connects tools to identify risks, waste, and gaps across tech stacks. [Learn more about Thalian](https://www.capterra.com/p/10040336/Thalian/)

[5.0 (8)](https://www.capterra.com/p/184757/BusinessLOG/#reviews)

AI-powered log management, SIEM, compliance, DLP, asset management, and IoT security in one on-premises platform. [Learn more about BusinessLOG](https://www.capterra.com/p/184757/BusinessLOG/)

[5.0 (22)](https://www.capterra.com/p/120070/EventSentry/reviews/)

Versatile Log & Event Log Hybrid SIEM solution with Active Directory, Health & Inventory monitoring - supports NIST & CMMC.compliance. [Learn more about EventSentry](https://www.capterra.com/p/120070/EventSentry/)

[## Google Cloud](https://www.capterra.com/p/268690/Google-Cloud-Platform/)

[4.7 (2265)](https://www.capterra.com/p/268690/Google-Cloud-Platform/reviews/)

Great for:

Mid-Size Business

Cloud-based service that allows users to create anything from swebsites to complex applications for businesses of all sizes. [Learn more about Google Cloud](https://www.capterra.com/p/268690/Google-Cloud-Platform/)

82% of users recommend this product

[## Datadog](https://www.capterra.com/p/135453/Datadog-Cloud-Monitoring/)

[4.6 (357)](https://www.capterra.com/p/135453/Datadog-Cloud-Monitoring/reviews/)

Good for:

Small Business

Datadog provides an easy-to-use cloud-native SIEM with out-of-the-box security integrations and customizable threat detection rules. [Learn more about Datadog](https://www.capterra.com/p/135453/Datadog-Cloud-Monitoring/)

[## Lookout](https://www.capterra.com/p/165640/Lookout/)

[4.7 (69)](https://www.capterra.com/p/165640/Lookout/reviews/)

Cloud-based mobile endpoint security platform that helps firms with preventing compromise of corporate data and phishing. [Learn more about Lookout](https://www.capterra.com/p/165640/Lookout/)

[## Sumo Logic](https://www.capterra.com/p/124188/Sumo-Logic/)

[4.6 (33)](https://www.capterra.com/p/124188/Sumo-Logic/reviews/)

Sumo Logic delivers the only cloud-native, real-time machine data analytics platform that provides continuous intelligence. [Learn more about Sumo Logic](https://www.capterra.com/p/124188/Sumo-Logic/)

[## Graylog](https://www.capterra.com/p/183539/Graylog/)

[4.6 (32)](https://www.capterra.com/p/183539/Graylog/reviews/)

Open, AI-powered SIEM that helps lean teams detect threats faster, reduce alert noise, and control data costs without vendor lock-in. [Learn more about Graylog](https://www.capterra.com/p/183539/Graylog/)

## Top-rated software of 2026

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