5 Best SIEM Tools & Software for 2023

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Security Information and Event Management (SIEM) is a critical enterprise technology that pulls data from IT and cybersecurity systems to assess threats and manage risks.

This guide evaluates the leading SIEM software solutions in the marketplace, focusing on the five SIEM tools we think are clear market leaders, followed by 10 strong contenders. We’ll also discuss what SIEM is, how it works, and how to choose a solution.

Also read: SIEM Explained: What is SIEM and How Does it Work?

Comparing the Top SIEM Software & Tools

  MITRE ATT&CK Mapping/Support Advanced Analytics Features Starting Price Free Trial Available
Splunk Enterprise Security Yes Yes Splunk offers entity and workload pricing; workload is positioned as the more value-oriented plan. Legacy ingest rates had started at $150 a month for 1GB of data/ day. Yes, for Splunk Enterprise
IBM Security QRadar SIEM Limited Yes QRadar Community Edition: Free.
Software: Starting around $320 per month.
SaaS: Starting around $2,340 per month.
Available through certain MSSPs
Securonix Unified Defense SIEM Limited Yes Contact Securonix for pricing information Available for SaaS offering
Exabeam Fusion Yes Yes Contact Exabeam for pricing information Available for SaaS cloud offering
LogRhythm SIEM Platform Limited No Based on needed MPS processing capacity; pricing typically starts under $30,000 No
Splunk icon

Splunk Enterprise Security

Best for IT Observability

Almost two decades after its launch, analytics-first Splunk offers plenty to consider in security and observability offerings. Splunk Enterprise Security — deployed on-premises or in multi-cloud environments — is designed to detect threats quickly and offer teams a flexible route to investigation and remediation. For SIEM capabilities, Splunk Enterprise Security is a scalable platform with over 2,800 apps that connect data and workflows.

A screenshot of the Splunk Enterprise platform's dashboard for reviewing incidents.
A screenshot of the Splunk Enterprise platform’s dashboard for reviewing incidents.

Key Features

  • Risk classification by users and systems against security and compliance frameworks
  • Scalable platform for structured and unstructured data ingestion, as well as data federation
  • Built-in threat intelligence via Threat Intelligence Management tool
  • Deployable as a cloud-hosted, IaaS, software, hardware appliance, or hybrid solution
  • Access to 700+ detections for frameworks like MITRE, NIST, Kill Chain, and CIS 20


  • Has one of the most comprehensive, data-centric approaches to SIEM and enterprise security in the market
  • Flexible infrastructure and deployment options
  • Integrates with a wide range of network and security devices


  • Smaller teams in particular may not have the resources to quickly configure and implement this solution
  • Splunk ES’s pricing and licensing model is not straightforward and can get very expensive
  • Fairly limited to the North American market


Splunk no longer publishes pricing information so prospective buyers should contact the company for a quote. Splunk offers legacy ingest pricing in addition to entity pricing and workload pricing. Workload pricing is being positioned as the more value-oriented plan. Enterprise ingest rates had started at $150 a month for 1GB of data a day, with discounts per GB as volume increases. AWS also has some pricing info.

IBM icon

IBM Security QRadar SIEM

Best for Global Reach

IBM Security QRadar SIEM is an enterprise favorite that’s adapted alongside the evolution of the SIEM market. Most recently, IBM launched the IBM Security QRadar Suite to more effectively combine threat detection, investigation and response, SOAR, SIEM, EDR, and XDR in one platform service for hybrid cloud users. 

Following rigorous frameworks for compliance and reporting, QRadar SIEM is one of the safest bets for enterprise companies. Its global reach is a definite advantage for many customers, with localized support services, regional regulatory knowledge, and distributed direct and partner channels in North America, Europe, APAC, the Middle East, and South and Central America.

A screenshot of the IBM Security QRadar dashboard showing monitoring data for network users.
A screenshot of the IBM Security QRadar dashboard showing monitoring data for network users.

Key Features

  • Continuous monitoring of on-premises and cloud environments throughout the kill chain
  • IBM’s Security X-Force and STIX/TAXII feed inform threat intelligence
  • Compliance resources are available for HIPAA, SOX, ISO, PCI, NIST, GLBA, GDPR and CCPA
  • Users can deploy QRadar SIEM as a hardware appliance, software, SaaS, or VM for on-prem and IaaS environments
  • Access to 450 integrations, APIs, and a software development kit (SDK)


  • IBM’s solution utilizes artificial intelligence (AI) to accelerate the detection of threats, along with user behavior analytics (UBA) and network flow insights
  • IBM has the most widespread and diverse portfolio of global security solutions and security experts
  • IBM’s security ecosystem is vast and integrates well with QRadar SIEM


  • Initial onboarding and implementation is a difficult process for many users
  • The user interface is outdated and somewhat difficult to navigate
  • Some users have commented on a lack of product support and new developments in the platform


IBM QRadar SIEM comes in a variety of formats and pricing packages. Here’s a breakdown of pricing information that the vendor provides on its site:

  • QRadar Community Edition: Limited free version
  • IBM QRadar SIEM (Software): Sliding scale based on the total workstations/employees and total servers in the environment. Depending on your requirements, the estimated price ranges from $320 per month to $26,540 per month.
  • IBM QRadar SIEM (SaaS): Sliding scale based on the total workstations/employees and total servers in the environment. Depending on your requirements, the estimated price ranges from $2,340 per month to $25,922 per month.
  • Managed Service: Pricing information is available upon request
  • On-Premises Offering: Available in subscription and perpetual models. Pricing information is available upon request.

Pricing is also broken down by Usage and Enterprise models. The Usage Model is based on Events per Second (EPS) and Flows per Minute (FPM). The Enterprise Model is based on the number of Managed Virtual Servers (MVS) used.

See the Top Security Orchestration, Automation and Response (SOAR) Solutions

Securonix icon

Securonix Unified Defense SIEM

Best for Future-Looking Vision

Securonix recently launched its new Unified Defense SIEM, which combines SIEM with threat detection, investigation and response (TDIR) and SOAR. It’s built on the Snowflake Data Cloud to maximize “hot” searchable data. Autonomous Threat Sweeper (ATS) searches for threats, and Threat Coverage Analyzer assesses security gaps and how your coverage stacks up against industry frameworks such as MITRE ATT&CK and US-CERT.

Securonix has long been recognized for its innovative approach to SIEM, especially when it comes to providing third-party data lake access and enabling data decentralization — a trending, cost-effective approach to SIEM.

A screenshot of the Securonix SIEM dashboard for recent top violators and corresponding threats.
A screenshot of the Securonix SIEM dashboard for recent top violators and corresponding threats.

Key Features

  • Ingestion for cloud-based, on-premises, and hybrid environments on a central console
  • Long-term search capabilities for slower threats spanning historical data
  • Cloud-native platform with on-demand scalability and SaaS subscription pricing
  • Access to 350+ cloud connectors for data collection and API-based cloud integrations
  • Use case content and investigation workbench is available to create cases with industry examples


  • Integrated SOAR allows teams to accelerate incident response
  • Response times are also reduced with Securonix’s playbooks and workflow recommendations.
  • Built-in threat intelligence at no additional cost.


  • Historically, Securonix has had only limited role-based access control (RBAC)
  • Users say Securonix is sometimes so focused on pioneering new features that it does not take time to perfect long-standing SIEM features
  • Some limitations to out-of-the-box log collection


Interested buyers should contact Securonix for pricing information. AWS also has some Securonix pricing information.

Exabeam icon

Exabeam Fusion

Best for Log Storage and Searchability

Exabeam Fusion is Exabeam’s threat detection, investigation, and response (TDIR) solution that brings together automated, next-generation SIEM and XDR capabilities. Beyond centralized log management, Exabeam Fusion includes a stack of security features to aid in an era of advanced threats. Companies can connect existing security tools with an extensive integration ecosystem or replace and condense security functions via Fusion’s capabilities.

A screenshot of a network user's profile and active incidents under investigation on Exabeam.
A screenshot of a network user’s profile and active incidents under investigation on Exabeam.

Key Features

  • User and entity behavior analytics (UEBA) for insider and zero-day threats
  • Full indexing for log ingestion and advanced search capabilities
  • Smart timelines gather and present evidence for incident timelines
  • Access to hundreds of playbooks and dashboards for compliance reporting
  • Integration options for over 500 security and IT tools in TDIR space


  • Relatively straightforward interface and user experience
  • Some of the best UEBA capabilities in the SIEM market
  • Log storage is able to store and retain searchable data for up to 10 years


  • Limited transparency in Exabeam’s pricing model
  • Third-party alerts are occasionally delayed in Fusion
  • Limited detection and response capabilities are built into Exabeam Fusion


Exabeam does not clearly communicate Fusion pricing on its vendor pages. Interested buyers will need to contact Exabeam’s sales team directly for pricing information. Exabeam SaaS Cloud free trials are also available upon request.

LogRhythm logo

LogRhythm SIEM Platform

Best for On-Premises SIEM

LogRhythm is an undisputed industry leader in the SIEM space, with a cybersecurity solution portfolio that extends to SOAR, UEBA, and network detection and response (NDR). The vendor’s flagship product, the LogRhythm SIEM Platform, is available in hardware appliance, software, cloud, and hybrid solution formats with scalability for enterprise organizations. As full-featured as any SIEM solution, LogRhythm is a favorite among customers, especially those who require a capable on-premises SIEM for their legacy network infrastructure.

A screenshot of the LogRhythm SIEM dashboards displaying platform data like alarms, user activity trends, and hosts.
A screenshot of the LogRhythm SIEM dashboards displaying platform data like alarms, user activity trends, and hosts.

Key Features

  • Advanced analytics detect malicious activity through compliance and security contexts
  • Prebuilt playbooks include alert triage, threat context, and case grouping
  • Accelerated threat detection and response comes with automated workflows for remediation
  • Threat intelligence and defensive analysis from LogRhythm Labs
  • Access to 950+ third-party data sources and 1,100 preconfigured correlation rule sets


  • A longtime, established provider of on-premises SIEM
  • A strong network of MSPs and reselling partners
  • The product interface and administration features are considered relatively easy to use


  • Fairly new to and struggling to gain its footing in the cloud and SaaS market
  • Limited API key integration capabilities for LogRhythm apps
  • Customers have historically disliked LogRhythm’s infrequent product, roadmap, and update releases; the company has since committed to quarterly product releases


LogRhythm products are offered to users in four different pricing package formats: Software Solution, True Unlimited Data Plan, High-Performance Appliance, and Unified License Program (ULP). Specific pricing information is not provided for any of these plans, but prices typically start under $30,000. Prospective buyers will need to contact LogRhythm for specific pricing information.

Honorable Mentions

The SIEM market is packed with good solutions, and here are 10 additional SIEM tools that may meet your needs.

Fortinet FortiSIEM

Industry-recognized firewall vendor Fortinet offers FortiSIEM as just one part of an extensive cybersecurity portfolio. The Security Operations portfolio includes products for SIEM, SOAR, XDR, and advanced detection and protection like NDR, deception systems, and inline sandbox analysis. Available as a hardware appliance, virtual machine, or cloud-based solution, FortiSIEM offers a comprehensive array of specs to users.

A screenshot of FortiSIEM's engine for building data ingestion rules.
A screenshot of FortiSIEM’s engine for building data ingestion rules.

Fortinet FortiSIEM Features

  • ML-based user and entity behavior analysis to identify insider and incoming threats
  • Real-time monitoring of system performance, availability, and changes
  • Risk scoring for users and devices to evaluate entities and correct behavior
  • Configurable dashboards, shareable reports, and layered analytics
  • Built-in support for vendor APIs and Windows and Linux agents

Logpoint Converged SIEM

SIEM specialist Logpoint has over twenty years of experience building a security platform that features UEBA, SOAR, and converged SIEM. With a blended focus on cybersecurity, business analytics, IT operations, and compliance, Converged Logpoint SIEM is a comprehensive cloud-based solution designed for enterprise or MSSP deployments. Logpoint holds particular expertise in infrastructure compliance monitoring, relying on its business-critical application security (BCAS) capabilities for SAP clients.

A screenshot of the User Account Management dashboard on LogPoint.
A screenshot of the User Account Management dashboard on LogPoint.

Logpoint Converged SIEM Features

  • Central cloud-based console for data ingestion, event reporting, and analysis
  • Alert aggregation and triage prioritized by severity
  • AI-based profiling of normal behavior and patterns to identify suspicious activity
  • Workflow and playbook automation for investigation and remediation
  • Integrations for identity and access management (IAM), threat intelligence, EDR, and cloud APIs

Trellix Security Operations and Analytics

The merger of FireEye and McAfee Enterprise in 2022 created a new brand — Trellix — with a portfolio that includes security solutions for endpoints, databases, networks and email, while McAfee’s cloud security portfolio was spun off as Skyhigh Security. Previously a part of the McAfee Enterprise Security Manager and FireEye, Trellix’s SIEM solution is known as Trellix Security Operations and Analytics. The SecOps and Analytics stack includes Helix for next-gen SIEM integration, Trellix Insights for threat intelligence, and Trellix ePO for on-premises and cloud endpoint orchestration.

A screenshot of the MVISION Mobile dashboard on the Trellix SIEM platform.
A screenshot of the MVISION Mobile dashboard on the Trellix SIEM platform.

Trellix SecOps and Analytics Features

  • ML-based user and entity behavior analytics identify and correlate risks
  • An investigative workbench provides alert management, search, and analysis
  • Access to 650 data sources for out-of-the-box integrations and connectors
  • Proactive and preemptive action informed by the Advanced Threat Research team
  • Threat intelligence exchange and advanced threat protection for effective sandboxing

CyberRes by OpenText ArcSight Enterprise Security Manager (ESM)

Previously owned by Micro Focus, the CyberRes by OpenText business line includes solutions for application security, data protection, IAM, and security operations through the ArcSight Enterprise Security Manager (ESM). ArcSight ESM combines SIEM and SOAR to alleviate the manual workloads of analysts and implement layered analytics across security tools.

A screenshot of the ArcSight SIEM displaying case data by timeline, type, workflow, and more.
A screenshot of the ArcSight SIEM displaying case data by timeline, type, workflow, and more.

CyberRes by OpenText ArcSight ESM Features

  • Unified log storage with big-data search and analytics visualization.
  • Active scanning for reconnaissance, initial access, persistence, and more
  • Native SOAR capabilities to automate, orchestrate, and enable incident response
  • Real-time correlations and hypothesis-based threat hunting to identify risks
  • Threat monitoring content packages that cover MITRE ATT&CK techniques and tactics

Rapid7 InsightIDR

Rapid7 offers a comprehensive SIEM platform with its flagship SIEM-XDR hybrid solution InsightIDR. Teams can use InsightIDR to automate everything from repetitive tasks to triage alerts to responses to threat behavior. Alongside products like InsightVM for vulnerability management, Rapid7’s SIEM solution includes EDR, network traffic analysis (NTA), UEBA, threat intelligence, and deception technology.

A screenshot of Rapid7 insightIDR dashboard for Azure monitoring data.
A screenshot of Rapid7 insightIDR dashboard for Azure monitoring data.

Rapid7 InsightIDR Features

  • Deployable Insight agents for any asset in on-premises environments or the cloud
  • Execute containment actions across Active Directory, IAM, EDR, and firewalls
  • Enhanced endpoint telemetry for historical activity investigations
  • File integrity monitoring meets compliance frameworks for GDPR, HIPAA, and PCI
  • Access to 300+ IT and security system plugins

AT&T USM Anywhere

AT&T USM Anywhere goes beyond traditional SIEM solutions with a stack of advanced enterprise security capabilities. These built-in capabilities include EDR, vulnerability assessment, incident response, and monitoring for file integrity and cloud infrastructures like AWS, Azure, Google Workspace, and Microsoft 365. Backed by a reputable threat intelligence unit with Alien Labs, the USM Anywhere solution is a top choice for small businesses and enterprise organizations alike.

A screenshot of the AlienVault USM platform with recent security event data.
A screenshot of the AlienVault USM platform with recent security event data.

AT&T USM Features

  • Utilize kill-chain taxonomy to identify behavior in five understandable categories
  • Filter searches by event name, IP address, and more
  • Determine business-critical asset vulnerabilities and prioritize remediation
  • Orchestration rules are available for select action alarms and raw data related to alarm activity
  • Built-in continuous threat intelligence via a unified management console

Elastic Security SIEM

Founded a decade ago in Amsterdam, Elastic rose quickly within the SIEM space with the Elastic Stack (formerly the ELK stack) for infrastructure monitoring, application performance, logging, and more. With acquisitions like Endgame in 2019, Elastic Security continues to extend its automated threat protection, incident response, and continuous monitoring capabilities. While Elastic Security SIEM alone is a considerable solution, Elastic also offers XDR, endpoint security, and cloud security.

A screenshot showing an anomaly score breakdown on Elastic Security SIEM.
A screenshot showing an anomaly score breakdown on Elastic Security SIEM.

Elastic Features

  • Uniform analysis from different data sources using the Elastic Common Schema (ECS)
  • Block malware, zero-day threats, and ransomware and conduct remote actions
  • Attack detection using MITRE ATT&CK knowledge base to identify adversary behavior
  • ML-enabled anomaly detection, analytics, and insights for threat hunters
  • Interactive timelines for visualizing and working through case management

ManageEngine Log360

Twenty years after the launch of ManageEngine, the multi-dimensional IT solutions provider has a portfolio covering identity and access management, IT service management, EDR, and low-code app development. ManageEngine’s stack of SIEM solutions includes on-premises tools for security auditing, log and compliance management, and its flagship Log360 SIEM for cloud or on-premises deployment.

An infographic showing how users can use ManageEngine's custom log parser.
An infographic showing how users can use ManageEngine’s custom log parser.

ManageEngine Features

  • Integrated DLP, UEBA, and CASB capabilities detect and respond to threats
  • Collect logs from IDPS, AV, firewalls, servers, networks, and end-user devices
  • Monitor and audit Active Directory with change management and threat tracking
  • Threat intelligence from STIX/TAXII-based feeds for blocked IP address and URL activity
  • Advanced threat analytics are available to inspect log data and detect suspicious behavior

RSA NetWitness

NetWitness, the longtime cybersecurity unit within RSA Security, emphasizes an evolved SIEM in an era of expanding attack surfaces and increasingly sophisticated threat actors. Through the NetWitness platform, teams can centralize all monitoring data for events, endpoints, and networks with threat intelligence and detection analytics. Features like NetWitness Detect AI offer an adaptive machine learning algorithm to detect and inform security analysts about threats. Users looking for a SIEM solution have the option to choose any of the following products:

  • Evolved SIEM
  • Cloud SIEM
  • Log Management
A screenshot of the NetWitness platform visualizes incidents, alerts, and risky hosts.
A screenshot of the NetWitness platform visualizes incidents, alerts, and risky hosts.

RSA NetWitness Features

  • User and entity behavior analytics monitor and identify malicious behavior
  • Deployment options include virtual, on-premises, or cloud (AWS, Azure, and Google)
  • Orchestrator for automating security operations and easing SOC analyst workflows
  • Unified taxonomy across data sources to accelerate threat detection
  • Threat intelligence via industry research, business context, and client data sources

Sumo Logic Cloud SIEM

Sumo Logic’s portfolio of observability and security products covers infrastructure monitoring, cloud logs, and application development environments. For security solutions, Sumo Logic excels in cloud security, offering monitoring, analytics, audit, and SOAR tools alongside its SIEM. Sumo Logic Cloud SIEM can cover millions of security-related data points across multi-cloud, on-premises, and hybrid environments while mitigating the traditional manual workload usually designated for security analysts.

A screenshot of the Insights dashboard on the Sumo Logic SIEM platform.
A screenshot of the Insights dashboard on the Sumo Logic SIEM platform.

Sumo Logic Cloud SIEM Features

  • Correlation-based detection to cluster and prioritize signal and relevant context
  • Automated alert triage and analysis to inform security analyst decision-making
  • Adaptive Signal Clustering (ASC) engine groups related calls for human review
  • Security monitoring with deep packet inspection, which reassembles flows into insights
  • API integration options, including Amazon GuardDuty, Microsoft 365, Okta, and Carbon Black

Additional SIEM Vendors

Blumira Datadog Devo
Fortra (HelpSystems) Graylog Gurucul
Huawei Microsoft NETMONASTERY
Netsurion Odyssey Consultants OSSEC
SolarWinds Stellar Cyber Venustech

15 Top Features of SIEM Tools

SIEM platforms often incorporate the best factors of other network security tools in order to comprehensively detect vulnerabilities and threats. The top features and capabilities you should look for when selecting a SIEM tool include the following:

  • Endpoint detection and response (EDR) and/or extended detection and response (XDR) integration
  • Advanced threat detection
  • User and entity behavior analytics (UEBA)
  • Database, app, network, email, and file integrity monitoring
  • Vulnerability monitoring
  • Threat hunting, digital forensics, and incident response
  • Unified management, asset discovery, and compliance reporting
  • Automated correlation, risk prioritization, IoC, and responses
  • Native access or integration with security orchestration, automation, and response (SOAR) tooling
  • Advanced analytics
  • Out-of-the-box content availability
  • Integration with ERP, big data, IAM, and threat intelligence platforms
  • Flexible infrastructure and deployability via on-premises, cloud, hybrid, and/or virtual environments
  • Industry-specific use cases and features
  • MITRE ATT&CK mapping and support

How to Choose a SIEM Tool

SIEM tools are differentiated by cost, features, and ease of use. Generally, the more you pay, the greater the capabilities and range of coverage, so buyers must weigh their needs, budget, and expertise as they decide on a SIEM system.

Small businesses might focus on automation, ease of use, and cost. In contrast, an enterprise with a sophisticated security operations center (SOC) might focus on the breadth of threats and assets covered as well as machine learning capabilities for discovering new and emerging threats. Regardless of an organization’s size, deploying and integrating such a complex technology can take time, so look for vendors that offer the help of consultants and MSPs.

Also read: SIEM vs. SOAR vs. XDR: What Are The Differences?

How We Evaluated the Top SIEM Tools

We gather information from various IT industry sources for our top security product reviews. We interview company officials, users, and impartial experts, scouring data sheets and aggregating all information to best inform our content and readers. Our most frequently used sources have been studies and reports from analyst firms like Gartner and Forrester, independent tests, and user review sites like Gartner Peer Insights. Where possible, we utilize demos and hands-on experience to gain a deeper understanding or products.

Bottom Line: SIEM Tools

To get an idea of how vital a SIEM platform is to enterprise security, consider the scale of security incidents and the data involved. A large enterprise may generate more than 25,000 events per second (EPS) and require 50 TB or more of data storage.

A SIEM’s ability to filter through all the data and prioritize the most critical security issues makes security more manageable. An effective SIEM tool will often be expensive, but it will also pay for itself in staff time saved and security incidents thwarted.

Read next: 34 Most Common Types of Network Security Protections

Shelby Hiter
Shelby Hiter
eSecurity Planet contributor Shelby Hiter has covered cybersecurity, AI and more in her time at TechnologyAdvice. In addition to eSecurity Planet, she's worked as a technology editor and writer for TechRepublic, LinuxToday, Webopedia, SoftwarePundit, Datamation, Enterprise Networking Planet, CIO Insight, AllBusiness.com, and SiteProNews. Beyond B2B content strategy and editing, she also specializes in marketing and communication strategies and the occasional photo collage of her dog.

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