Top 9 SIEM tools tailored for your IT security needs

Picture this: your IT team is buried in alerts, scrambling to identify which ones are real threats and which are false alarms. Sound familiar? Managing security operations manually is no longer a viable option. Security teams deal with thousands of alerts a day while trying to keep up with the expanding attack surfaces.

Vectra AI’s State of Threat Detection reveals that SOC teams receive an average of 4,484 daily alerts, of which 67% are ignored due to alert fatigue. This overwhelming volume leads to up to three hours per day spent on manual alert triaging, costing organizations in the U.S. $3.3 billion annually.

All of these statistics indicate the need for effective threat detection and response solutions, such as SIEM. SIEM tools are designed to cut through the noise, providing actionable insights and streamlining your threat response.

But with so many options on the market, how do you choose the right one? This blog will guide you through the top 10 SIEM tools trusted by IT experts.

What is SIEM software?

Security information and event management (SIEM) software is a security solution that helps organizations collect, analyze, and correlate data from different sources within their IT infrastructure. Its key capabilities are real-time monitoring, automated threat detection, incident response, log management, and compliance reporting.

SIEM is often compared to other cybersecurity solutions, like EDR, XDR, and MDR. The main difference is that SIEM mainly focuses on log data collected within the network, while solutions like XDR focus on threat detection across a wider range of sources. SIEM systems often integrate with third-party tools, like Atera, to extend their capabilities.

Types of SIEM tools

SIEM software is available in self-hosted, hosted, open-source, and managed versions. Below is a short breakdown of each to help you choose the best option.

1. Self-hosted SIEM

Self-hosted SIEM software is one of the most common option for most organizations. This simply means that you’re responsible for deploying, managing, and maintaining the SIEM solution on your own IT infrastructure. While self-hosted, customers get access to dedicated onboarding, customer support, and regular updates.

2. Hosted SIEM

Hosted cloud-based SIEM solutions are delivered via the cloud and managed by the vendor, but without the added services of a fully managed SIEM. Hosted SIEM requires you to have your own IT team, but you don’t need your own on-premise infrastructure.

3. Open-source SIEM

Open-source SIEM platforms tend to be more customizable and cost-effective than self-hosted or managed solutions, but they also require the most technical expertise. Although open-source solutions’ low purchasing costs can be attractive, the maintenance costs and security risks add up quickly, making them unsuitable for most organizations.

4. Managed SIEM

Managed SIEM is essentially an SIEM as a managed service. Also known as MDR providers, they are ideal for organizations that don’t have the internal resources to deploy, manage, and monitor an SIEM solution.

Benefits of SIEM

The benefits of SIEM tools are tenfold for organizations. Here are the five key benefits you can expect to get from them:

• Higher cost savings: According to IBM, the average cost of a data breach in 2024 was $4.88 million, a 10% increase over the previous year. SIEM software helps prevent data breaches and their associated costs.
• Improved efficiency: SIEM platforms cut down manual tasks associated with security management. Once threats are detected, SIEM tools are capable of taking automated actions, like isolating devices or blocking malicious IP addresses, improving overall efficiency.
• Better regulatory compliance: SOCs can use SIEM software to comply with regulatory requirements, like HIPAA and GDPR. SIEM software collects data from different sources and generates reports that can be used as evidence in audits.
• Reduced false alerts: SIEM tools can filter out the most critical alerts from a pool of notifications. Potential threats are identified and prioritized according to their severity, which allows SOCs to investigate actual threats.
• Enhanced scalability: The top SIEM tools are scalable systems that grow with your organization’s needs. Plus, they offer integrations with different RMM, PSA, firewall, antivirus, and other security tools, so you can centralize security event data across your entire IT environment.

The top 9 SIEM tools in 2025

Let’s now review the top SIEM tools for 2025. We categorized each of the tools into best of categories, so choosing the right one for your organization is easier:

• Bitdefender GravityZone – Best overall SIEM tool
• Microsoft Sentinel – Best SIEM for the Microsoft/Azure ecosystem
• Splunk – Top SIEM for complex security environments
• Cortex XSIAM – Best all-in-one security platform
• ManageEngine Log360 – Best low-cost SIEM
• SentinelOne Singularity – Best integrated XDR + SIEM platform
• CrowdStrike Falcon – Best SIEM for large-scale endpoint environments
• InsightIDR – Best SIEM with MDR service
• Elastic Security – Best open-source SIEM

Below, we will review each one of these in detail.

Bitdefender GravityZone – Best overall SIEM tool

Bitdefender GravityZone is our choice for the best overall SIEM tool. It’s an EDR solution with SIEM capabilities, such as real-time threat detection, incident management and response, and advanced analytics. It helps protect against network-based attacks by monitoring incoming, outgoing, and lateral traffic and using multiple layers of security.

GravityZone aims to be a unified security solution for monitoring all devices, including laptops, desktops, physical and virtual servers, and more. It integrates with Atera for IT management capabilities like patch management and RMM.

G2 Rating: 4.0 out of 5.0 stars (70+ reviews)

Capterra Rating: 4.6 out of 5.0 stars (220+ reviews)

Bitdefender GravityZone pricing:

• The GravityZone Business Security Premium enterprise pricing plans start from $570 per year for 10 devices.

Microsoft Sentinel – Best SIEM for the Microsoft/Azure ecosystem

Microsoft Sentinel is a cloud-native SIEM solution that helps detect, investigate, respond to, and proactively hunt cyber threats. It uses behavioral analytics to group alerts into incidents. It also has investigation tools that help understand the scope of an attack and find the root cause of potential threats. You can automate incident response tasks using predefined rules.

Microsoft Sentinel is ideal for organizations operating in the Microsoft ecosystem. A G2 user mentions that its native support for Microsoft and Azure security services makes it one of the leading SIEM solutions. Organizations often use it alongside Microsoft Defender XDR or Microsoft Intune. 

G2 Rating: 4.4 out of 5.0 stars (285+ reviews)

Capterra Rating: 4.5 out of 5.0 stars (6 reviews)

Microsoft Sentinel Pricing:

• Microsoft Sentinel’s pricing plans vary based on the amount of data analyzed daily. For example, 100GB of data per day costs $342.52. 

Splunk – Top SIEM for complex security environments

Splunk is a well-known SIEM solution among enterprises managing thousands of endpoints. Customers mostly appreciate its ability to capture and analyze logs accurately from a wide variety of sources. Splunk has a risk-based alerting system, which helps to reduce alert fatigue and detect threats like low-and-slow attacks, which are typically overlooked.

One thing to note is that, according to Reddit users, Splunk is considered to be one of the most expensive SIEM solutions. Although the price is high, most users agree that Splunk is the most advanced SIEM tool out there.

G2 Rating: 4.3 out of 5.0 stars (410+ reviews)

Capterra Rating: 4.6 out of 5.0 stars (250+ reviews)

Splunk Pricing:

• Splunk doesn’t publicly showcase its pricing. Reddit users claim that Splunk is only suitable for organizations with multi-million-dollar security budgets.

Cortex XSIAM – Best all-in-one security platform

Cortex XSIAM is Palo Alto Networks’ most comprehensive product for managing security operations. Its capabilities include analytics-based detection, incident management, data centralization, intelligent stitching, and attack surface management. Cortex XSIAM’s system continuously collects telemetry, alerts, and events from various sources, then automatically processes and analyzes the data for real-time security insights.

The XSIAM comes from “extended SIEM,” and it aims to combine SOC capabilities, such as XDR, SOAR, ASM, and SIEM, into a single platform. This means organizations don’t have to switch between different tools for security operations.

G2 rating: 4.3 out of 5.0 stars (400+ reviews)

Capterra rating: 4.4 out of 5.0 stars (15+ reviews)

Cortex XSIAM Pricing:

• Pricing is based on custom quotation. According to users on Reddit, the pricing is dependent on the amount of users, GB/day, and any add-ons you choose.

ManageEngine Log360 – Best low-cost SIEM

One of ManageEngine’s products, Log360, is a low-cost SIEM and SOAR tool for IT organizations. It helps identify threats faster through AI-powered anomaly detection, real-time correlation, and signature-based analysis. ManageEngine also simplifies security operations by automating tasks like data enrichment, incident assignment, and investigation workflows.

For as low as $300 per year for 75GB of storage, users can get started with Log360. There’s also a free plan, but its features are more limited.

G2 Rating: 4.3 out of 5.0 stars (13+ reviews)

Capterra Rating: 4.6 out of 5.0 stars (16+ reviews)

ManageEngine Log360 Pricing:

• Free plan: $0 per year for 50GB of storage
• Basic plan: $300 per year for 75GB of storage
• Standard plan: $995 per year for 150GB of storage
• Professional plan: $1,995 per year for 150GB of storage
• MSSP edition: $1,995 per year for 150GB of storage

SentinelOne Singularity – Best integrated XDR + SIEM platform

SentinelOne Singularity’s SIEM helps protect endpoints, cloud systems, networks, identities, email, and more. It’s an integrated XRD + SIEM platform that offers capabilities like threat hunting, threat intelligence, real-time monitoring and detection, and automated responses. 

SentinelOne’s AI continuously learns and adapts to new threats, ensuring your organization stays ahead of them. SentinelOne lets you ingest third-party data from any source, with 10GB per day included for free.

G2 Rating: 4.7 out of 5.0 stars (180+ reviews)

Capterra Rating: 4.8 out of 5.0 stars (100+ reviews)

SentinelOne pricing:

• Singularity Core: $69.99/year, per endpoint
• Singularity Control:  $79.99/year, per endpoint
• Singularity Complete: $179.99/year, per endpoint
• Singularity Commercial: $229.99/year, per endpoint
• Singularity Enterprise: Pricing is based on a custom quotation

CrowdStrike Falcon – Best SIEM for large-scale endpoint environments

CrowdStrike Falcon is an AI-native platform for log management and SIEM. It’s a popular SIEM for enterprises requiring capabilities for processing and analyzing large volumes of security data. The data can be collected from multiple sources, such as endpoints, servers, Active Directory, firewalls, networks, and databases.

To keep your infrastructure secure, CrowdStrike Falcon has tools for real-time performance monitoring, threat hunting, and incident response. In addition, it comes with a conversational AI chatbot that can help understand the root causes of problems and generate scripts.

G2 rating: 4.7 out of 5.0 stars (290+ reviews)

Capterra rating: 4.7 out of 5.0 stars (45+ reviews)

CrowdStrike Falcon pricing:

• Falcon Go: $59.99/device, per year
• Falcon Pro: $99.99/device, per year
• Falcon Enterprise: $184.99/device, per year
• Falcon Complete MDR: You need to contact sales for pricing

InsightIDR – Best SIEM with MDR service

InsightIDR is an AI-powered SIEM solution that offers diverse log collection capabilities, custom log parsing, and search and reporting. The solution also comes with EDR capabilities and assists with endpoint threat detection and response. InsightIDR has a Network Traffic Analysis tool that provides network visibility and detection.

If your organization doesn’t have an internal security team, InsightIDR offers an MDR service, which gives you access to an expert team, 24/7 monitoring, and proactive threat hunting.

G2 Rating: 4.4 out of 5.0 stars (65+ reviews)

Capterra Rating: 4.3 out of 5.0 stars (3 reviews)

InsightIDR Pricing:

• InsightIDR Essential: Based on a custom quotation
• InsightIDR Advanced: Based on a custom quotation
• InsightIDR Ultimate: Based on a custom quotation

Elastic Security – Best open-source SIEM

Elastic Security is an open-source SIEM solution that offers users three security options: serverless, hosted, or self-managed. The two popular options are hosted and serverless. Hosted gives users full control over hardware configuration, cluster size, and pricing, while serverless is a fully managed option where Elastic handles all infrastructure. 

Elastic Security combines SIEM capabilities with endpoint detection and response. It uses real-time data ingestion, search capabilities, and machine learning to identify and respond to threats across endpoints, cloud services, and networks.

G2 Rating: 4.4 out of 5.0 stars (10 reviews)

Capterra Rating: 4.8 out of 5.0 stars (14 reviews)

Elastic Security Pricing:

• Elasticsearch: Starts from $99/month
• Elastic Observability: Starts from $99/month
• Elastic Security: Starts from $99/month

Atera – Best IT management platform with integrated SIEM

Atera is an all-in-one IT management platform that integrates with the leading XDR solutions to complement its built-in endpoint management and security capabilities. 

Atera’s SIEM integrations include Bitdefender, Cynet, ESET, and Vicarius, and here’s what each of them is used for:

• Bitdefender: Use Atera and Bitdefender to detect network attacks designed to gain access to endpoints through specific attacks.
• Cynet: Access advanced endpoint and network security, threat detection, and comprehensive analytics with the Atera and Cynet integration.
• ESET: Monitor endpoint events, filter out false positives, and get insights from deep behavioral analysis with the Atera and ESET integration.
• Vicarius (vRx): Identify, mitigate, and remediate CVE-related risks on your network with the Atera and Vicarius integration.

Using Atera, enterprises can use our built-in RMM, patch management, remote access, and reporting tools, as well as access the SIEM integrations to further protect against advanced threats.

Features and capabilities

Atera integrates with the leading SIEM tools, but also has built-in features to keep your workstations, servers, and other endpoints secure.

One of Atera’s key features is Atera’s RMM, which monitors your system activity in real time and alerts you to potential issues. Once issues are detected, they’re categorized based on their severity, and you can automatically run scripts to resolve common problems.

Atera’s AI script generator

To complement the RMM capabilities, Atera offers AI agents that proactively and autonomously support your entire IT operations. 

Atera’s AI Copilot works alongside technicians and automatically handles tasks like troubleshooting devices, solving technical issues, generating scripts, and filtering through large device lists. Technicians can use AI Copilot to run health checks, diagnose, suggest actions, and solve issues in seconds.

Even before that, Atera’s IT Autopilot is the first line of support for end-users, empowering them to self-solve IT issues. Autopilot handles tasks like creating step-by-step instructions or software setup guides, eliminating 40% of your IT workload, and your techs can focus on more strategic tasks.

Our AI agents not only increase the scope, speed and quality of work for existing teams, but they are available 24/7, and require simple training and onboarding time.

In addition, to keep your devices secure, Atera’s patch management tool lets you deploy patches across Windows, macOS, and Linux devices.

Customer reviews and ratings

G2 rating: 4.6 out of 5.0 stars (830+ reviews)

What Atera users are saying on G2:

• “Atera’s AI agents are constantly improving and provide helpful scripts. Atera constantly develops the platform, and new features come out frequently,” a G2 user says.

• “I love that Atera has made me need fewer third-party tools by bundling all of our management into one panel,” a G2 user says.

Capterra rating: 4.5 out of 5.0 stars (430+ reviews)

What Atera users are saying on Capterra:

• “I’ve used Atera for many years now, and its handy features make it worth every penny. The monitoring is great for handling 100+ companies,” a Capterra user says.

• “Atera’s extensive feature set and ability to seamlessly integrate with the rest of our toolset significantly surpassed our expectations,” a Capterra user says.

Atera pricing plans

Atera’s pricing is based on the number of technicians using the platform, which differs from most IT management and SIEM solutions, which charge per GB or per endpoint. With Atera, you can manage unlimited endpoints at no additional cost.

The pricing plans are as follows:

Atera pricing plans for IT departments:

• Professional: $149 per month, per technician
• Expert: $189 per month, per technician
• Master: $219 per month, per technician
• Enterprise: Custom quotation; contact sales to get pricing

Atera pricing plans for MSPs:

• Pro: $129 per month, per technician
• Growth: $179 per month, per technician
• Power: $209 per month, per technician
• Superpower (Enterprise): Custom quotation; contact sales to get pricing

Secure your organization’s IT infrastructure with Agentic AI technology

If you’re considering SIEM as your security solution, it’s important to know about alternative options. You also have the option of XDR tools, which are the most comprehensive security solutions. EDR tools are another option, focusing on endpoint security.

There are also options like Atera, which offer all-in-one RMM software with strong security capabilities. Unlike most RMM solutions relying on obsolete technology, Atera enables IT to run autonomously through its AI agents, completely transforming how organizations operate in the modern world.

When combining Atera with its SIEM integrations, enterprises can autonomously manage many parts of IT management, while proactively detecting and responding to security threats.

Interested in learning more? See how Atera users are already using our AI agents for IT management.

To use Atera for securing your organization’s IT infrastructure, you can sign up for Atera’s 30-day free trial or contact our sales team for a custom demo.