--- title: The 4 Best Open Source SIEM Tools of 2026 --- # The 4 Best Open Source SIEM Tools of 2026 Last Reviewed: March 4, 2026 13 min read [No comments](https://www.selecthub.com/siem/open-source-siem/?noamp=mobile#respond) [ ![Tamoghna Das](https://www.selecthub.com/wp-content/uploads/2022/08/Tamoghna-Headshot-96x96.jpg) ](https://www.selecthub.com/author/tamoghna-das/) [Written by Tamoghna Das](https://www.selecthub.com/author/tamoghna-das/) Technical Content Writer [ ![Pooja Verma](https://secure.gravatar.com/avatar/4f22202f68158fa4b012b18a196e08ea151f6f9427b194cce3330634ff0dd1b2?s=96&d=mm&r=g) ](https://www.selecthub.com/author/pooja-verma/) [Edited by Pooja Verma](https://www.selecthub.com/author/pooja-verma/) Content Editor [ ![Sagardeep Roy](https://www.selecthub.com/wp-content/uploads/2025/01/Sagardeep-Roy-96x96.jpg) ](https://www.selecthub.com/author/sagardeep-roy/) [Technical Research by Sagardeep Roy](https://www.selecthub.com/author/sagardeep-roy/) Senior Analyst Table of Contents * [Best Open Source SIEM Tools](#Best%5FOpen%5FSource%5FSIEM%5FTools "Best Open Source SIEM Tools") * [Wazuh](#Wazuh "Wazuh") * [AlienVault OSSIM](#AlienVault%5FOSSIM "AlienVault OSSIM") * [Graylog Open](#Graylog%5FOpen "Graylog Open") * [Prelude SIEM](#Prelude%5FSIEM "Prelude SIEM") * [Open Source SIEM vs. Enterprise-Grade SIEM](#Open%5FSource%5FSIEM%5Fvs%5FEnterprise-Grade%5FSIEM "Open Source SIEM vs. Enterprise-Grade SIEM") * [Advantages & Limitations](#Advantages%5FLimitations "Advantages & Limitations") * [Advantages](#Advantages "Advantages") * [Limitations](#Limitations "Limitations") * [FAQs](#FAQs "FAQs") * [Next Steps](#Next%5FSteps "Next Steps") Learning to drive in a high-speed racing car might not be the wisest choice for beginners. Similarly, investing in a full-fledged [SIEM tool](https://www.selecthub.com/c/siem-tools/) may not be feasible if you’re just entering the cybersecurity business. Start your cyber defense journey with an open source SIEM tool that can protect your systems without breaking the bank. We’ve put together a our detailed guide on the top five solutions so you can understand their benefits, capabilities and drawbacks. Select up to 4 products from the list below to compare \> < | Product | User Sentiment Scorei The percentage of users who would recommend this product based on user reviews collected from popular reviews sites. | Start Price | Free Trial | Company Size | | ------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ----------- | ---------- | ------------ | | [Prelude SIEM](https://www.selecthub.com/p/siem-tools/prelude-siem/) | 100%Excellent | $0Free, Open-Source | Yes ([Request for Free](https://pmo.selecthub.com/free-trial/?product%5Fname=Prelude+SIEM&category=SIEM+Tools&product%5Flogo=https://cdn.selecthub.com/products/c3ad4331d5fac2ce23e520b0cc0fcb5e-43ca63c97de2afd5ab7a4ecb35afd003/resources/normal/logo.png?1746557836)) | Small Medium Large | | -------------------------------------------------------------------- | ------------- | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------ | | [Graylog](https://www.selecthub.com/p/siem-tools/graylog/) | 90%Excellent | $1,250Monthly | Yes ([Request for Free](https://pmo.selecthub.com/free-trial/?product%5Fname=Graylog&category=SIEM+Tools&product%5Flogo=https://cdn.selecthub.com/products/e7010b9fb43e91b36e43b374ce2d7454-2c8556a21a20ebde961955a1f0ca0a10/resources/normal/logo.png?1730938550)) | Small Medium Large | | [Wazuh](https://www.selecthub.com/p/siem-tools/wazuh/) | 89%Great | $571Monthly | Yes ([Request for Free](https://pmo.selecthub.com/free-trial/?product%5Fname=Wazuh&category=SIEM+Tools&product%5Flogo=https://cdn.selecthub.com/products/729fbaf01455353285fd43871be6ebb7-ae0999aa0af0889c243ce9505b79abbc/resources/normal/logo.png?1746558593)) | Small Medium Large | | [OSSIM](https://www.selecthub.com/p/siem-tools/alienvault-ossim/) | 80%Great | $0Free, Open-Source | No | Small Medium Large | Compare Compare [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) Like any other purchase, evaluating the best open source SIEM tools can be challenging. With limitless considerations and features to compare, we’ve created this guide to simplify your software selection process. ## Best Open Source SIEM Tools Our analysts at SelectHub have carefully shortlisted the best free open source SIEM tools for your reference. [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) ### [Wazuh](https://www.selecthub.com/p/siem-tools/wazuh/) Wazuh is a free enterprise-ready open source SIEM tool that evolved from [OSSEC](https://documentation.wazuh.com/current/migration-guide/migrating-from-ossec/index.html). It offers vulnerability detection, security log analysis, configuration assessment and regulatory compliance capabilities. You can implement the software on Linux operating systems, and it supports on-premise, cloud-based and hybrid deployment methods. While a free version is available, there’s also a paid option with a hosted cloud platform that offers an attractive UI, straightforward setup and open-source threat intelligence feeds. ![Wazuh Security Events Dashboard]() Get security event details on the dashboard. [Source](https://wazuh.com/) #### Suitable For * IT security managers * Site reliability engineers * Software developers * General managers * Administrators #### Supported OS * Linux #### Top Benefits * **Analyze Security Logs:** Active [endpoint monitoring](https://www.selecthub.com/endpoint-security/endpoint-monitoring/) and auditing help protect IT infrastructure and meet regulatory compliance. Collect, aggregate and analyze security event data to detect irregularities and [indicators of compromise (IoC)](https://www.digitalguardian.com/blog/what-are-indicators-compromise). Get contextual information and reduce response time by expediting investigations. * **Monitor File Integrity:** You can receive comprehensive alerts from file integrity monitoring (FMI) when it detects system changes. Expand these alerts and get a detailed summary of changes on the dashboard. * **Examine System Inventory:** Identify system assets and evaluate patch management efficacy by collecting system data, including installed software details, ports, network interfaces and OS information from monitoring endpoints. Generate inventory reports to identify unwanted apps, services, malicious artifacts and processes. * **Supervise Containers:** Monitor signs of unexpected security incidents across containers and get real-time alerts. Protect workloads at both container and infrastructure levels. * **Install in Offline Mode:** You can install Wazuh even without an active internet connection. Set up and configure central components like the indexer, server and dashboard in an all-in-one deployment on the same host. You can also deploy each component in separate hosts. #### Primary Features * **Security Configuration Assessment (SCA):** The platform helps identify security flaws and misconfigurations in your systems. It uses [CIS benchmarks](https://www.cisecurity.org/cis-benchmarks) to scan your systems for efficiently detecting and remediating deviations from best practices. Scan tests provide three possible results: passed, failed and not applicable. * **Active Response:** Wazuh can stop running processes, block network connections and delete malicious software or files to automate incident response. It provides stateful or stateless active response capabilities. * **Rootkits Detection:** Rootcheck analysis helps scan systems and detect rootkits at the user space and kernel level. The platform uses signatures of known trojans and rootkits to generate alerts on anomalies. * **Regulatory Compliance:** It helps comply with regulatory frameworks like [GDPR](https://gdpr-info.eu/), [TSC SOC2](https://www.dashsdk.com/resource/soc-2-trust-services-criteria-tsc/), [HIPAA](https://www.hhs.gov/hipaa/index.html), [NIST 800-53](https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final) and [PCI DSS](https://www.pcisecuritystandards.org/) and offers tools to detect policy violations. * **Alerts and Notifications:** The system generates real-time notifications and alerts quickly after anomaly detection to reduce response time. #### Limitations * It doesn’t offer timely updates for UI/UX improvements. * The platform lacks external data ingestion features. * It doesn’t provide real-time monitoring for Unix systems. **Price:** **$**$$$$ **Deployment:** **Platform:** **Company Size Suitability**: **S M L** [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) ### [AlienVault OSSIM](https://www.selecthub.com/p/siem-tools/alienvault-ossim/) OSSIM (open source security information management) by AlienVault is a leading free open source SIEM tool. It also has an enterprise-grade paid version, USM Anywhere, with more advanced features. You can use the free version on a single server, but upgrading it to the paid version allows scaling to additional servers. The platform comprises security frameworks like OSSEC, Nagios, Snort and OpenVAS. It features event collection, correlation, normalization and a threat intelligence feed called open threat exchange (OTX). ![AlienVault OSSIM IT Environment Dashboard]() Keep track of your IT environment with interactive dashboards. [Source](https://www.youtube.com/watch?v=G76GFuoVkyI) #### Suitable For * IT security and risk managers * Consultants * Industry analysts * Tech writers * Administrators #### Supported OS * Windows * Linux #### Top Benefits * **Discover Asset Information and Inventory:** Scan and identify assets on the network to determine primary information such as IP addresses, operating systems and MAC addresses. Asset visibility helps you better understand your inventory status. * **Manage Alarms:** Get alerts on any event with a risk value of one or higher. You can also use filters to search for specific alarms. * **Access Threat Intelligence:** Open Threat Exchange (OTX), a threat intelligence community, offers community-powered actionable insights into bad actors and emerging threat trends. * **Monitor USB Devices:** Capture and monitor USB device events on Windows systems through a [host intrusion detection system (HIDS)](https://cybersecurity.att.com/documentation/usm-appliance/ids-configuration/deploying-alienvault-hids.htm). You can view information about HIDS events, including serial number, driver, size and file system. * **Manage Policies:** Create better policies to control and manage event processing based on your workflow needs. #### Primary Features * **Intrusion Detection System:** You can monitor hosts and networks to detect policy violations and malicious activities. It also helps to identify hacking attempts, anomalies and possible intrusions. * **Behavioral Monitoring:** OSSIM analyzes behavioral patterns to identify deviations from the predefined standard. This lets you detect [unknown threats](https://www.paloaltonetworks.com/cyberpedia/what-are-unknown-cyberthreats) and policy violations by authorized devices. * **Event Correlation:** You can correlate and analyze log and event data across the system for better incident response. * **Vulnerability Assessment:** Schedule vulnerability scans for IT assets based on vulnerability signature databases. It helps identify insecure configurations and unpatched software across the organization. * **Reporting:** The platform generates real-time notifications and reports, including alarm, compliance, ticket status and availability reports. USM, the paid version, offers customized and flexible reporting capabilities. #### Limitations * It lacks consistent product documentation. * The platform doesn’t provide a separate log server. * The customer support response time is slow. **Price:** **$**$$$$ **Deployment:** **Platform:** **Company Size Suitability**: **S M L** [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) ### [Graylog Open](https://www.selecthub.com/p/log-analysis-software/graylog-open/) Graylog Open is a free, open source SIEM platform offering centralized log management capabilities. It collects, stores, enhances and analyzes security events and log data. Top features include dashboards, advanced searches, fault tolerance, content packs and graylog sidecar. It also provides a dashboard to display real-time security monitoring data, vital metrics and trends on a single page. ![Graylog Field Statistics Dashboard]() Get detailed field statistics on the Graylog dashboard. [Source](https://graylog.org/products/source-available/) #### Suitable For * IT security managers * Network analysts * Consultants * Healthcare providers * Administrators #### Supported OS * Linux #### Top Benefits * **Optimize Indexing:** Manage several Elasticsearch indices for analysis and search optimization, ensuring higher speed and lower resource consumption. You can use index sets with different analyzers, mappings and replication settings. * **Simplify Configurations:** Handle flexible configurations for both third-party log collectors and Graylog collectors within one centralized interface. Tag systems help maintain a consistent configuration across all hosts. * **Streamline Task Execution:** You can pull particular time ranges from Graylog data anywhere to analyze issues at any given time. Build queries and perform tasks like troubleshooting, conducting forensics, responding to breaches and analyzing user behavior. * **Monitor Geolocations:** A geolocation processor helps track and visualize geolocations of field assets by extracting IP addresses from logs. It can even display maps in latitude and longitude format. * **Expand Functionality:** The Graylog marketplace offers a centralized repository that includes a GELF library, content packs, plug-ins and external systems. #### Primary Features * **Search Parameters:** This feature helps build and execute queries. You can initiate standard analysis using several input parameters and display results in different formats, including charts and graphs. Share complex queries with data aggregation and visualization. * **Fault Tolerance:** It features a load balancer with numerous servers ingesting logs and provides additional interfaces. You can ensure zero data loss by configuring Elasticsearch and MongoDB databases. Additionally, a message journal stores data on a disk to avoid damage by power losses. * **Content Packs:** Built-in inputs, streams and extractors ensure you collect and identify logs correctly before processing them. It converts logs into searchable and readable files. * **Lookup Tables:** You can overwrite existing fields or create new message fields by mapping and translating field values. * **Role-Based Access Control:** This capability helps assign proper access levels to policies and job roles to different users. Administrators can assign roles (event creator, notification creator and event definition creator) and access levels (manager, viewer and owner). #### Limitations * It doesn’t offer timely updates for UI/UX enhancements. * The platform lacks external data ingestion features. * It doesn’t provide real-time monitoring for Unix systems. **Price:** **$**$$$$ **Deployment:** **Platform:** **Company Size Suitability**: **S M L** [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) ### [Prelude SIEM](https://www.selecthub.com/p/siem-tools/prelude-siem/) Prelude SIEM is a free, open source solution that supports multiple log formats and can easily integrate with third-party tools like Suricata, OSSEC and Snort. The IDMEF format lets you use [intrusion detection system](https://www.geeksforgeeks.org/intrusion-detection-system-ids/) (IDS) data. It offers capabilities like data monitoring, legal inquiry, alerting, reporting and third-party integrations. ![Prelude Archive Module]() Centralize, store and index any data type with the archive module. #### Suitable For * Defense staff * IT security managers * Analysts * Security consultants * IT managers * Administrators #### Supported OS * Linux * Mac #### Top Benefits * **Ensure Seamless Log Compatibility:** Analyze all types of logs, including IDS, VPNs, firewalls, databases, monitoring systems, routers, POP/SMTP servers, web servers, FTB servers, honeypots, vulnerability scanners and more. The log analyzer allows you to analyze log information from these hosts to detect malicious activities. * **Automate Ticketing Processes:** Integrate with advanced ticketing systems to automatically update, create and browse public tickets. * **Track Agent Heartbeats:** Heartbeats are periodic signals generated by agents to provide updates on their status, like connecting or terminating the connection. Get continuous ticketing agent heartbeat updates on a dedicated tab in real time. * **Improve Data Retention:** Store all collected data from supported databases, including MySQL, SQLite and PostgreSQL, in a centralized database. You can design data retention policies using scheduled [crontab](https://www.geeksforgeeks.org/crontab-in-linux-with-examples/) jobs as well. * **Acquire Native Support:** Get active native support for the most used systems, including Samhain, Snort, AuditD, OSSEC, Linux-PAM, Samhain, Pam, Nepenthes, SanCP and NuFW. #### Primary Features * **Data Monitoring:** Analysts can prioritize and customize events based on criteria like agent information, event severity and the extent of damage. You can also define assets containing values linked to various IDMEF fields. * **Data Classification and Filtering:** This feature enriches data with information like the classification of addresses in IPv4 or IPv6\. To refine data analysis, you can use different filter types, including thresholding, limitation and IDMEF event fields. * **Reporting:** It offers real-time data visualization and generates customized, actionable reports. The output formats are IDMEF XML, email, database and flat logfile. * **Legal Inquiry:** Prelude SIEM offers access to legal inquiry tools like Whois, Ping, Nmap, Traceroute and more. * **Alerting:** This capability helps you detect threats quickly by generating real-time alerts upon identifying suspicious activities. The alerting menu has three sections — alerts, threats (displaying the nature of hazards) and agents (providing agent and heartbeat details). #### Limitations * Centralized logging could be a single point of failure. * It has protocol analysis vulnerabilities. **Price:** **$**$$$$ **Deployment:** **Platform:** **Company Size Suitability**: **S** M L [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) ## Open Source SIEM vs. Enterprise-Grade SIEM | **Open Source SIEM** | **Enterprise-Grade SIEM** | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | It’s mostly free or has minimal software licensing costs. Support, maintenance and customization may cost extra. | They come with monthly or yearly subscription costs. The licensing fee covers software updates, maintenance and support. | | It provides basic beginner-level SIEM capabilities, including log monitoring and event data collection and analysis. | It offers a wide range of professional and advanced features like [UEBA](https://www.ibm.com/topics/ueba), behavior analysis, advanced threat detection and compliance reporting. | | You can customize these tools by adding and modifying the code and integrating it with other modules to suit your business [requirements](https://pmo.selecthub.com/siem-requirements/). | These tools also offer customization options but are designed with a broader feature set to suit all kinds of requirements, avoiding the need to extend or modify the code. | | These tools have limitations when it comes to scalability and struggle with handling large amounts of data. | It’s highly scalable and capable of handling larger amounts of data per business needs. | | You need to rely on community support and external consultants as they offer limited technical support. | Enterprise-grade SIEM vendors offer dedicated support platforms and troubleshooting, configuration and update assistance. | [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) ## Advantages & Limitations Open source SIEM tools offer several enticing benefits in terms of simplicity, cost efficiency and flexibility. However, these advantages come hand in hand with certain limitations that you should carefully consider. ### Advantages * The tools are cost-effective and help save your business’ financial resources. * You can use these systems as a stepping stone into the industry and enhance your skill set. * Integrate with third-party solutions to achieve better cybersecurity protection. * Suitable for small and medium organizations with limited cybersecurity budgets. ### Limitations * They don’t offer essential protection features like automation, visualization and in-depth visibility. * You have to fix bugs and troubleshoot yourself, as assistance is hard to get. * Several platforms cannot handle large cloud infrastructures, creating hindrances in your business operations. * Most tools don’t offer comprehensive compliance support. * Despite saving financial resources, these systems might end up taking much more time from your analysts and IT specialists. ## FAQs [Is Wazuh a free solution?](#group%5F140) Yes, Wazuh is a free enterprise-ready open source SIEM tool. [What are the cons of open source SIEM?](#group%5F914) As mentioned above, open source SIEM tools require third-party integration and technical expertise to run smoothly. They don’t offer essential capabilities like storage management, in-depth analysis, compliance and more. [Is open source bad for security?](#group%5F147) Open source tools offer their source code in the public domain for anyone to access, which isn’t inherently bad. However, malicious actors can exploit vulnerabilities present in the source code. [Compare Top SIEM Tool Leaders](https://pmo.selecthub.com/request-custom-scorecard/?category=SIEM%20Tools) ## Next Steps While open source SIEM tools are great stepping stones, they aren’t enough for comprehensive log management and threat protection. As your company scales, you’ll eventually have to implement enterprise-grade SIEM platforms that offer advanced capabilities, technical support and quick deployment. That’s a big reason driving their dominance in the commercial market today. If you’re ready to take the next step, check out our [free comparison report](https://pmo.selecthub.com/request-custom-leaderboard/?category=SIEM%20Tools) on top SIEM tools. It offers valuable insights on top-rated vendors, software features and scorecards. You can also get reviews from actual selection processes to assist your software selection process. Which open source SIEM tools have you used before? Do you find these tools valuable, and where do you think they fall short? Let us know in the comments below! **Analyst-Picked Related Content** **Comparison Report:** [An interactive analyst report with comparison ratings, reviews and pricing for SIEM tools ](https://pmo.selecthub.com/request-custom-leaderboard/?category=SIEM%20Tools) ### Trending Topics #### [SIEM](https://www.selecthub.com/category/siem/) [XDR vs SIEM: A Comprehensive Comparison](https://www.selecthub.com/siem/xdr-and-siem/) [The rapidly evolving cyber threat landscape has made it imperative for businesses to implement effective… ](https://www.selecthub.com/siem/xdr-and-siem/) [ ![Tamoghna Das](https://www.selecthub.com/wp-content/uploads/2022/08/Tamoghna-Headshot-96x96.jpg) Tamoghna Das ](https://www.selecthub.com/author/tamoghna-das/) Mar 04, 2026 #### [SIEM](https://www.selecthub.com/category/siem/) [SOAR vs SIEM: A Comprehensive Comparison](https://www.selecthub.com/siem/soar-and-siem/) [SOAR vs. SIEM in cybersecurity is similar to the rivalry between the Yankees and the… ](https://www.selecthub.com/siem/soar-and-siem/) [ ![Tamoghna Das](https://www.selecthub.com/wp-content/uploads/2022/08/Tamoghna-Headshot-96x96.jpg) Tamoghna Das ](https://www.selecthub.com/author/tamoghna-das/) Mar 04, 2026 #### [SIEM](https://www.selecthub.com/category/siem/) [What Is SIEM? A Comprehensive Guide](https://www.selecthub.com/siem/what-is-siem/) [Organizations today produce more data than ever, thanks to the growing dependency on the cloud.… ](https://www.selecthub.com/siem/what-is-siem/) [ ![Tamoghna Das](https://www.selecthub.com/wp-content/uploads/2022/08/Tamoghna-Headshot-96x96.jpg) Tamoghna Das ](https://www.selecthub.com/author/tamoghna-das/) Mar 04, 2026 #### [SIEM](https://www.selecthub.com/category/siem/) [What Is SIEM Integration? A Comprehensive Guide](https://www.selecthub.com/siem/siem-integration/) [Security is one of the most vital aspects of providing cloud services and frameworks. But… ](https://www.selecthub.com/siem/siem-integration/) [ ![Tamoghna Das](https://www.selecthub.com/wp-content/uploads/2022/08/Tamoghna-Headshot-96x96.jpg) Tamoghna Das ](https://www.selecthub.com/author/tamoghna-das/) Mar 04, 2026 Originally published in August 2023 and last updated in March 2026\. Contributions from Tamoghna Das, Sagardeep Roy, Suhan Das, and Pooja Verma. ## About the Contributors The following team members helped research, create, and review this content. [ ](https://www.selecthub.com/author/tamoghna-das/) Written by [Tamoghna Das](https://www.selecthub.com/author/tamoghna-das/) Technical Content Writer Tamoghna Das is a Technical Content Writer at SelectHub, specializing in endpoint security, warehouse management, fleet management and eCommerce. Armed with a Master's degree in Communication (Media Practice) from the University of Hyderabad, he simplifies complex tech topics into engaging content. In his downtime, Tamoghna strums his guitar, explores podcasts on aviation and astronomy, indulges in sitcoms and enjoys quality time with friends and family. [See Full Bio](https://www.selecthub.com/author/tamoghna-das/) [ ](https://www.selecthub.com/author/sagardeep-roy/) Technical Research by [Sagardeep Roy](https://www.selecthub.com/author/sagardeep-roy/) Senior Analyst Sagardeep is a Senior Research Analyst at SelectHub, specializing in diverse technical categories. His expertise spans Business Intelligence, Analytics, Big Data, ETL, Cybersecurity, artificial intelligence and machine learning, with additional proficiency in EHR and Medical Billing. Holding a Master of Technology in Data Science from Amity University, Noida, and a Bachelor of Technology in Computer Science from West Bengal University of Technology, his experience across technology, healthcare, and market research extends back to 2016\. As a certified Data Science and Business Analytics professional, he approaches complex projects with a results-oriented mindset, prioritizing individual excellence and collaborative success. [See Full Bio](https://www.selecthub.com/author/sagardeep-roy/) [ ](https://www.selecthub.com/author/suhan-das/) Technical Research by [Suhan Das](https://www.selecthub.com/author/suhan-das/) Senior Analyst Suhan is a writer, engineer and researcher with a Bachelor of Technology (Computer Science). He has experience in detailed research and collaborative works related to products from a wide array of fields, such as Applicant Tracking Systems, Help Desk Software, Customer Relationship Management Software and more. [See Full Bio](https://www.selecthub.com/author/suhan-das/) [ ](https://www.selecthub.com/author/pooja-verma/) Edited by [Pooja Verma](https://www.selecthub.com/author/pooja-verma/) Content Editor Pooja Verma is a Content Editor and Technical Content Writer at SelectHub. She has over 5 years of experience covering software categories like CRM, marketing automation, supply chain management and endpoint security. Pooja earned a literature degree from Miranda House, DU and also holds a Master’s in Journalism from Symbiosis Institute of Media and Communication in India. [See Full Bio](https://www.selecthub.com/author/pooja-verma/) Tamoghna DasWhat Is SIEM Integration? A Comprehensive Guide * ‹ * › ### Conversation ![Avatar](https://secure.gravatar.com/avatar/281d3616cf761f3582c0d76c23517846?s=32&d=mm&r=g) Write a response [Cancel reply](https://www.selecthub.com/siem/open-source-siem/#respond) Your message Your name \* Your email \* Website Save my name, email, and website in this browser for the next time I comment. Δ **Tier 1:** Fully/moderately supported out-of-the-box allowing for quick and easy deployment. Fully or moderately supported out-of-the-box with industry-leading capabilities and is immediately available after installation without needing any add-ons, integrations, or custom development. **Tier 2:** Supported with workarounds or add-ons that may require additional costs. Not directly available in the software, but can be accomplished using other built-in features, workarounds, or add-ons/products from the vendor with or without any additional cost. **Tier 3:** Requires partner integrations or custom development that is often at an additional cost. Requires additional integrations, plugins, marketplace applications from a third-party vendor, or custom development using the APIs, libraries, extensions, and development framework supported by the software, with or without any additional cost. [Close](#) ```json {"@context":"https://schema.org","@graph":[{"@type":"Article","@id":"https://www.selecthub.com/siem/open-source-siem/#article","isPartOf":{"@id":"https://www.selecthub.com/siem/open-source-siem/"},"author":{"name":"Tamoghna Das","@id":"https://www.selecthub.com/#/schema/person/6a05c04626e3e9c7461896b7d8d4329c"},"headline":"The 4 Best Open Source SIEM Tools of 2026","datePublished":"2023-08-28T19:20:23+00:00","dateModified":"2026-03-04T18:30:23+00:00","mainEntityOfPage":{"@id":"https://www.selecthub.com/siem/open-source-siem/"},"wordCount":3008,"commentCount":0,"publisher":{"@id":"https://www.selecthub.com/#organization"},"articleSection":["SIEM"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https://www.selecthub.com/siem/open-source-siem/#respond"]}]},{"@type":"WebPage","@id":"https://www.selecthub.com/siem/open-source-siem/","url":"https://www.selecthub.com/siem/open-source-siem/","name":"Best Open Source SIEM Tools Of 2026","isPartOf":{"@id":"https://www.selecthub.com/#website"},"datePublished":"2023-08-28T19:20:23+00:00","dateModified":"2026-03-04T18:30:23+00:00","breadcrumb":{"@id":"https://www.selecthub.com/siem/open-source-siem/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https://www.selecthub.com/siem/open-source-siem/"]}]},{"@type":"BreadcrumbList","@id":"https://www.selecthub.com/siem/open-source-siem/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.selecthub.com/"},{"@type":"ListItem","position":2,"name":"SIEM","item":"https://www.selecthub.com/category/siem/"},{"@type":"ListItem","position":3,"name":"The 4 Best Open Source SIEM Tools of 2026"}]},{"@type":"WebSite","@id":"https://www.selecthub.com/#website","url":"https://www.selecthub.com/","name":"SelectHub","description":"Confidence in Software","publisher":{"@id":"https://www.selecthub.com/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://www.selecthub.com/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https://www.selecthub.com/#organization","name":"SelectHub","url":"https://www.selecthub.com/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https://www.selecthub.com/#/schema/logo/image/","url":"","contentUrl":"","caption":"SelectHub"},"image":{"@id":"https://www.selecthub.com/#/schema/logo/image/"},"sameAs":["https://www.facebook.com/selecthub/","https://x.com/SelectHub","https://www.linkedin.com/company/selecthub"]},{"@type":"Person","@id":"https://www.selecthub.com/#/schema/person/6a05c04626e3e9c7461896b7d8d4329c","name":"Tamoghna Das","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https://www.selecthub.com/#/schema/person/image/","url":"https://www.selecthub.com/wp-content/uploads/2022/08/Tamoghna-Headshot-96x96.jpg","contentUrl":"https://www.selecthub.com/wp-content/uploads/2022/08/Tamoghna-Headshot-96x96.jpg","caption":"Tamoghna Das"},"description":"Tamoghna Das is a Technical Content Writer at SelectHub, specializing in endpoint security, warehouse management, fleet management and eCommerce. Armed with a Master's degree in Communication (Media Practice) from the University of Hyderabad, he simplifies complex tech topics into engaging content. In his downtime, Tamoghna strums his guitar, explores podcasts on aviation and astronomy, indulges in sitcoms and enjoys quality time with friends and family.","sameAs":["https://www.selecthub.com","https://www.linkedin.com/in/tamoghna-das-753103180/"],"url":"https://www.selecthub.com/author/tamoghna-das/"}]} {"@context":"https:\/\/schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Is Wazuh a free solution?","acceptedAnswer":{"@type":"Answer","text":"Yes, Wazuh is a free enterprise-ready open source SIEM tool."}},{"@type":"Question","name":"What are the cons of open source SIEM?","acceptedAnswer":{"@type":"Answer","text":"As mentioned above, open source SIEM tools require third-party integration and technical expertise to run smoothly. They don\u2019t offer essential capabilities like storage management, in-depth analysis, compliance and more."}},{"@type":"Question","name":"Is open source bad for security?","acceptedAnswer":{"@type":"Answer","text":"Open source tools offer their source code in the public domain for anyone to access, which isn\u2019t inherently bad. 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