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Microsoft Sentinel Alternatives: 7 Options Compared, Including Free (2026)

Explore 7 alternatives to Microsoft Sentinel — vetted by our editors with real user reviews, pricing, and feature comparisons.

Microsoft Sentinel alternatives: the 7 best options at a glance

Quick answer

Need a Microsoft Sentinel alternative fast? Consider AlienVault USM (from AT&T Cybersecurity), IBM QRadar and EventSentry. AlienVault USM (from AT&T Cybersecurity) leads the list with a 4.4★ rating from real users. Compare all 7 on rating and pricing below.

Some teams leave Microsoft Sentinel for the price, others for features or fit. Whatever yours is, these 7 security information and event management (siem) software free alternatives are the picks we'd start with, ranked by SpotScore (real-user satisfaction plus market presence), ratings, and pricing. Editors review each. The table is your quick comparison; the sections below add depth.

ProductSpotScoreRatingPricingBest for
AlienVault USM (from AT&T Cybersecurity)Streamline security, protect your enterprise everywhere.—★★★★☆ 4.4Freefrom $1,075.00 per monthteams of all sizes
IBM QRadarDetect threats, protect assets with IBM QRadar.—★★★★☆ 4.32(210)Freefrom $800/momid-size & enterprise teams
EventSentryStreamline your server monitoring and log management.—★★★★★ 4.71(36)FreeFree Trial · Freemium · Quotation Basedteams of all sizes
SolarWinds Security Event ManagerProtecting your network, 24/7.—★★★★★ 4.6Freefrom $2,525.00teams of all sizes
Blumira Automated Detection & ResponseStay ahead of threats with proactive cybersecurity solutions.—★★★★★ 4.8FreeFreemium · Subscriptionteams of all sizes
CyStack PlatformEmpowering businesses to conquer cyber threats—Not yet ratedFreeFree Trial · Quotation Basedteams of all sizes
VoltConsoleSecure, monitor, and streamline with VoltConsole.—Not yet ratedFreeFreemium · Subscription · Quotation Basedteams of all sizes
AlienVault USM (from AT&T Cybersecurity)

AlienVault USM (from AT&T Cybersecurity)

Streamline security, protect your enterprise everywhere.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.4

Add to compare

What is AlienVault USM (from AT&T Cybersecurity)?

Introducing AlienVault USM, the cutting-edge Unified Security Management (USM) platform from AT&T Cybersecurity. USM Anywhere revolutionizes security management by offering a cloud-based solution that streamlines threat detection, incident response, and compliance management across cloud, ...

Read more about AlienVault USM (from AT&T Cybersecurity)
Free TrialTry Free →
IBM QRadar - New SaaS Software

IBM QRadar

Detect threats, protect assets with IBM QRadar.

Best for: Mid-market · Enterprise

Start Free Trial

4.3

210 verified reviews

Add to compare

What is IBM QRadar?

IBM QRadar is a top-rated Security Information and Event Management software helping organizations detect and eliminate potential damage from network breaches and cyber-attacks. Implementing QRadar, teams can patch essential asset vulnerabilities and investigate suspicious activity quickly and ...

Read more about IBM QRadar
Free TrialTry Free →·

IBM QRadar offers custom pricing plan

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EventSentry - New SaaS Software

EventSentry

Streamline your server monitoring and log management.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.7

36 verified reviews

Add to compare

What is EventSentry?

EventSentry is a log and server monitoring tool designed to make workflows much easier. Get email alerts in response to monitored events, data and security codes, with embedded visual charts for analyzing performance. All of these metrics can be accessed via dashboard and made available across ...

Read more about EventSentry
Free TrialTry Free →·

EventSentry offers custom pricing plan

SolarWinds Security Event Manager

SolarWinds Security Event Manager

Protecting your network, 24/7.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.6

Add to compare

What is SolarWinds Security Event Manager?

Introducing SolarWinds Security Event Manager – an innovative solution designed to enhance your cybersecurity defenses with ease and affordability. As a real-time Security Information and Event Management (SIEM) platform, Security Event Manager (SEM) works tirelessly to detect, alert, and ...

Read more about SolarWinds Security Event Manager
Free TrialTry Free →
Blumira Automated Detection & Response

Blumira Automated Detection & Response

Stay ahead of threats with proactive cybersecurity solutions.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

4.8

Add to compare

What is Blumira Automated Detection & Response?

Blumira is a cloud SIEM platform that provides automated threat detection and response for IT teams without a dedicated security operations center. It reduces alert overload, simplifies log management, and handles threat remediation automatically, keeping systems monitored without requiring ...

Read more about Blumira Automated Detection & Response
CyStack Platform - New SaaS Software

CyStack Platform

Empowering businesses to conquer cyber threats

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

Add to compare

What is CyStack Platform?

CyStack Platform is a revolutionary software designed to whip up cybersecurity solutions and automate tedious workflows for businesses of all sizes. The solution equips companies with tools to efficiently manage IT resources and monitor potential threats, while enabling them to detect and ...

Read more about CyStack Platform
Free Trial·

CyStack Platform offers custom pricing plan

VoltConsole - New SaaS Software

VoltConsole

Secure, monitor, and streamline with VoltConsole.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

Add to compare

What is VoltConsole?

VoltConsole is the perfect solution for businesses with distributed applications and infrastructure. It provides a single platform to manage and monitor all layers of security services, give early warnings, and gain actionable business insights. Proactive alerts and autonomous anomaly detection ...

Read more about VoltConsole

Starts from $25/Month, also offers free forever plan

The main Microsoft Sentinel competitors

Buyers comparing Microsoft Sentinel usually weigh it against these 7 security information and event management (siem) software competitors, starting with AlienVault USM (from AT&T Cybersecurity), IBM QRadar and EventSentry. Each is compared against Microsoft Sentinel on rating, pricing and feature coverage below.

Sites and apps like Microsoft Sentinel

Searches for "sites like Microsoft Sentinel" and "apps like Microsoft Sentinel" land on the same set of options as "Microsoft Sentinel alternatives" — the 7 options below cover both, whether you want a like-for-like replacement or something lighter.

Why each option earned its place

AlienVault USM (from AT&T Cybersecurity)Best for teams of all sizes
IBM QRadarBest for mid-size & enterprise teams

Reviewers praise its log collection and event correlation for effective threat detection.

Watch for: Several reviewers find it complex and resource-heavy, sometimes hard to analyze logs.

EventSentryBest for teams of all sizes

Comprehensive monitoring

Watch for: May require technical expertise

SolarWinds Security Event ManagerBest for teams of all sizes
Blumira Automated Detection & ResponseBest for teams of all sizes
CyStack PlatformBest for teams of all sizes

Automates cybersecurity workflows

Watch for: Complex setup process

VoltConsoleBest for teams of all sizes

Centralized security management

Watch for: Complex setup process

Why teams look for a Microsoft Sentinel alternative

Switching away from Microsoft Sentinel is usually triggered by one or more of these sticking points:

  • Requires cloud infrastructure
  • Can be complex to configure
  • Potentially high costs for large organizations

How to evaluate a Microsoft Sentinel alternative

The hard numbers across these 7 security information and event management (siem) software free alternatives: 7 offer a free tier; paid plans run $800–$2525, with IBM QRadar the cheapest entry point; and EventSentry is the highest rated at 4.71★ across 36 reviews.

How we put this in order.

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 Microsoft Sentinel are Blumira Automated Detection & Response (4.8★), EventSentry (4.7★), SolarWinds Security Event Manager (4.6★). Compare all 7 alternatives side-by-side above.

When evaluating alternatives to Microsoft Sentinel, prioritize: Reporting and Analysis, Compliance Tracking, Data Security, Analytics, Compliance Management, 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 Microsoft Sentinel 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.

How to land on the right Microsoft Sentinel alternative

Ready to leave Microsoft Sentinel?

Getting off Microsoft Sentinel cleanly comes down to preparation. Export everything, verify the new tool can import it, and check feature parity for your day-to-day work. Run a small pilot first, then migrate fully, keeping Microsoft Sentinel as backup until you're done. Free trials above lower the risk.

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