Compare the Top Free IT Security Software as of October 2025

What is Free IT Security Software?

IT security software is designed to protect information technology (IT) systems, networks, and data from cyber threats, such as malware, hacking, and unauthorized access. These tools provide various features such as antivirus protection, firewalls, encryption, intrusion detection and prevention systems, and vulnerability management to ensure the integrity, confidentiality, and availability of sensitive information. IT security software helps organizations detect, prevent, and respond to security incidents, mitigate risks, and ensure compliance with industry regulations. It is critical for businesses and individuals to safeguard against cyberattacks, data breaches, and other security vulnerabilities. Compare and read user reviews of the best Free IT Security software currently available using the table below. This list is updated regularly.

  • 1
    groundcover

    groundcover

    groundcover

    Cloud-based observability solution that helps businesses track and manage workload and performance on a unified dashboard. Monitor everything you run in your cloud without compromising on cost, granularity, or scale. groundcover is a full stack cloud-native APM platform designed to make observability effortless so that you can focus on building world-class products. By leveraging our proprietary sensor, groundcover unlocks unprecedented granularity on all your applications, eliminating the need for costly code changes and development cycles to ensure monitoring continuity. 100% visibility, all the time. Cover your entire Kubernetes stack instantly, with no code changes using the superpowers of eBPF instrumentation. Take control of your data, all in-cloud. groundcover’s unique inCloud architecture keeps your data private, secured and under your control without ever leaving your cloud premises.
    Starting Price: $20/month/node
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  • 2
    QuantaStor

    QuantaStor

    OSNEXUS

    QuantaStor is a unified Software-Defined Storage platform designed to scale up and out to make storage management easy while reducing overall enterprise storage costs. With support for all major file, block, and object protocols including iSCSI/FC, NFS/SMB, and S3, QuantaStor storage grids may be configured to address the needs of complex workflows which span sites and datacenters. QuantaStor’s storage grid technology is a built-in federated management system which enables QuantaStor servers to be combined together to simplify management and automation via CLI and REST APIs. The layered architecture of QuantaStor provides solution engineers with unprecedented flexibility and application design options that maximizes workload performance and fault-tolerance for a wide range of storage workloads. QuantaStor includes end-to-end security coverage enabling multi-layer data protection “on the wire” and “at rest” for enterprise and cloud storage deployments.
    Starting Price: $/TB based on scale
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  • 3
    Fraud.net

    Fraud.net

    Fraud.net, Inc.

    Fraudnet's AI-driven platform empowers enterprises to prevent threats, streamline compliance, and manage risk in real-time. Our sophisticated machine learning models continuously learn from billions of transactions to identify anomalies and predict fraud attacks. Our unified solutions: comprehensive screening for smoother onboarding & improved compliance, continuous monitoring to proactively identify new threats, & precision fraud detection across channels and payment types. With dozens of data integrations and advanced analytics, you'll dramatically reduce false positives while gaining unmatched visibility. And, with no-code/low-code integration, our solution scales effortlessly as you grow. The results speak volumes: Leading payments companies, financial institutions, innovative fintechs, and commerce brands trust us worldwide—and they're seeing dramatic results: 80% reduction in fraud losses and 97% fewer false positives. Request your demo today and discover Fraudnet.
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  • 4
    ManageEngine Applications Manager
    ManageEngine Applications Manager is an enterprise-ready platform designed to monitor an entire application ecosystem of a business organization. Our platform helps IT and DevOps teams get visibility into all the dependent components within their application stack. With Applications Manager, it becomes easier to monitor the performance of mission-critical web applications, web servers, databases, cloud services, middleware, ERP systems, messaging components, and more. It has tons of features that fast-track the troubleshooting process and help reduce MTTR. This way, issues are fixed before application end-users are affected. Applications Manager has a fully functional dashboard that can be customized to get performance insights at a glance. By configuring alerts, it constantly keeps a lookout for performance issues within the application stack. Combining this with intelligent machine learning, Applications Manager helps turn performance data into actionable insights.
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    Starting Price: $395.00/Year
  • 5
    Splunk AppDynamics
    Splunk AppDynamics delivers full-stack observability for hybrid and on-prem environments, linking technical performance directly to business outcomes. It enables teams to detect anomalies, diagnose root causes, and prioritize issues based on their real business impact. With capabilities ranging from network performance correlation to SAP system optimization, the platform offers deep insights across applications, APIs, and infrastructure. Its runtime security features safeguard applications by detecting vulnerabilities, blocking attacks, and highlighting potential risks. AppDynamics also enhances digital experiences with web, mobile, and synthetic monitoring to understand user journeys. By unifying performance, security, and business analytics, Splunk AppDynamics helps enterprises reduce costs, prevent outages, and deliver seamless customer experiences.
    Starting Price: $6 per month
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    NAKIVO Backup & Replication
    NAKIVO Backup & Replication offers complete data protection for virtual, physical, cloud, and SaaS environments including VMware vSphere, Microsoft Hyper-V, Nutanix AHV, Proxmox VE, Amazon EC2, Windows and Linux physical machines and servers, files shares/NAS, Oracle database, and Microsoft 365. You can install the NAKIVO solution on Linux and Windows OS, or deploy it as a pre-configured virtual appliance (VA) or Amazon Machine Image (AMI). You can also install the solution on NAS to create a cost-efficient and fast backup appliance. NAKIVO Backup & Replication includes advanced disaster recovery functionality with Site Recovery and Real-Time Replication for VMware. In addition, you can protect backups from ransomware using built-in cybersecurity features like immutability and pre-recovery malware scans.
    Starting Price: $229/ socket; $25 workload/y
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    VirtualMetric

    VirtualMetric

    VirtualMetric

    VirtualMetric is a powerful telemetry pipeline solution designed to enhance data collection, processing, and security monitoring across enterprise environments. Its core offering, DataStream, automatically collects and transforms security logs from a wide range of systems such as Windows, Linux, MacOS, and Unix, enriching data for further analysis. By reducing data volume and filtering out non-meaningful logs, VirtualMetric helps businesses lower SIEM ingestion costs, increase operational efficiency, and improve threat detection accuracy. The platform’s scalable architecture, with features like zero data loss and long-term compliance storage, ensures that businesses can maintain high security standards while optimizing performance.
    Starting Price: Free
  • 8
    Cribl Stream
    Cribl Stream allows you to implement an observability pipeline which helps you parse, restructure, and enrich data in flight - before you pay to analyze it. Get the right data, where you want, in the formats you need. Route data to the best tool for the job - or all the tools for the job - by translating and formatting data into any tooling schema you require. Let different departments choose different analytics environments without having to deploy new agents or forwarders. As much as 50% of log and metric data goes unused – null fields, duplicate data, and fields that offer zero analytical value. With Cribl Stream, you can trim wasted data streams and analyze only what you need. Cribl Stream is the best way to get multiple data formats into the tools you trust for your Security and IT efforts. Use the Cribl Stream universal receiver to collect from any machine data source - and even to schedule batch collection from REST APIs, Kinesis Firehose, Raw HTTP, and Microsoft Office 365 APIs
    Starting Price: Free (1TB / Day)
  • 9
    Appranix

    Appranix

    Appranix

    Appranix empowers enterprises to achieve cloud application resilience against any cloud application downtime. Average ransomware attack costs 4.54M USD and takes about 26 days to recover. 14% of cloud application downtime occurs due to misconfigurations. Appranix's unique approach delivers unprecedented resilience for distributed and dynamic cloud workloads. Our patented continuous cloud infrastructure backup, cloud-native data backup and replication along with automated recovery-as-code capabilities significantly reduce recovery time and human intervention after a cyber disaster or cloud service or region failure. Appranix is a Gartner Cool Vendor and EMA Top 3 vendor. Our SaaS platform is SOC II Type II certified and available on AWS, Azure, GCP, VMware, IBM/Redhat marketplaces. Join leading CTOs, CIOs, and cloud operations teams who trust Appranix to deliver the resilience they need to thrive in today's digital world.
    Starting Price: $25/unit/month
  • 10
    Accelario

    Accelario

    Accelario

    Take the load off of DevOps and eliminate privacy concerns by giving your teams full data autonomy and independence via an easy-to-use self-service portal. Simplify access, eliminate data roadblocks and speed up provisioning for dev, testing, data analysts and more. Accelario Continuous DataOps Platform is a one-stop-shop for handling all of your data needs. Eliminate DevOps bottlenecks and give your teams the high-quality, privacy-compliant data they need. The platform’s four distinct modules are available as stand-alone solutions or as a holistic, comprehensive DataOps management platform. Existing data provisioning solutions can’t keep up with agile demands for continuous, independent access to fresh, privacy-compliant data in autonomous environments. Teams can meet agile demands for fast, frequent deliveries with a comprehensive, one-stop-shop for self-provisioning privacy-compliant high-quality data in their very own environments.
    Starting Price: $0 Free Forever Up to 10GB
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    Asigra

    Asigra

    Asigra

    Asigra helps IT teams increase their data recovery confidence through our unsurpassed reliability, security, manageability, and affordability in data protection software. Asigra's Enterprise Backup and Disaster Recovery (BDR) software platform was designed for Managed Service Providers (MSPs) to host and operate their own Backup as a Service solution. The easy to manage platform offers users the ability to white-label it to match your brand, while its breakthrough Hybrid Cloud Backup architecture combines a Cloud optimized scale-out architecture, a Cloud backup and recovery software platform, and a Cloud API and management system to help IT Teams seamlessly and efficiently manage, scale and deliver data protection services.
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    Nagios Network Analzyer

    Nagios Network Analzyer

    Nagios Enterprises

    Network Analyzer provides an in-depth look at all network traffic sources and potential security threats allowing system admins to quickly gather high-level information regarding the health of the network as well as highly granular data for complete and thorough network analysis. Network Analyzer provides a central view of your network traffic and bandwidth data as well as potential network compromises. The powerful home dashboard provides an at-a-glance view of critical netflow or sflow data sources, server system metrics, and abnormal network behavior for quick assessment of network health. Users can easily drill down to see specific information on individual IPs, source port, destination port, or any combination thereof. Network Analyzer’s advanced alerting and reporting capabilities provide IT staff with superior awareness of their network. Highly granular, down-to-the-packet data can be accessed and archived for further tracking and analysis.
    Starting Price: $1995.00
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    Bacula Enterprise

    Bacula Enterprise

    Bacula Systems

    Bacula Enterprise delivers Physical, Virtual, Container and Hybrid Cloud Backup & Recovery software for the Modern Data Center - all from a single platform. Designed for medium and large organizations, Bacula Enterprise backup and recovery software brings unique innovation, modern architecture, business value benefits and low cost of ownership. Bacula Enterprise corporate data backup software solution uses exclusive technologies that increase the interoperability, power, flexibility and functionality of Bacula Enterprise into a wide range of IT environments such as enterprise data centers, managed service providers, software vendors or cloud providers. Thousands of organizations worldwide use Bacula Enterprise in mission-critical environments, including NASA, Texas A&M University, Unicredit, Swisscom, Sky, and many more. Bacula provides additional security features over other vendors and offers advanced, hybrid Cloud connectivity to Amazon, S3, Google, Oracle and many more.
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    Sheetgo

    Sheetgo

    Sheetgo Europe

    Sheetgo is the no-code automation tool for teams. Create custom workflows to collect, manage and share data — all from a spreadsheet. From inventory management and financial forecasting to sales tracking and student attendance monitoring, you can build a tailor-made, automated system for any business process. Sheetgo works with Google Sheets, Excel and CSV files. Say goodbye to manual work and create an automated workflow today at sheetgo.com.
    Starting Price: $20/user/month
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    ManageEngine AD360
    AD360 is an integrated identity and access management (IAM) solution for managing user identities, governing access to resources, enforcing security, and ensuring compliance. From user provisioning, self-service password management, and Active Directory change monitoring, to single sign-on (SSO) for enterprise applications, AD360 helps you perform all your IAM tasks with a simple, easy-to-use interface. AD360 provides all these functionalities for Windows Active Directory, Exchange Servers, and Office 365. With AD360, you can just choose the modules you need and start addressing IAM challenges across on-premises, cloud, and hybrid environments from within a single console. Easily provision, modify, and deprovision accounts and mailboxes for multiple users at once across AD, Exchange servers, Office 365 services, and G Suite from a single console. Use customizable user creation templates and import data from CSV to bulk provision user accounts.
    Starting Price: $595.00 / year
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    NGINX
    NGINX Open Source: The open source web server that powers more than 400 million websites. NGINX Plus is a software load balancer, web server, and content cache built on top of open source NGINX. Use NGINX Plus instead of your hardware load balancer and get the freedom to innovate without being constrained by infrastructure. Save more than 80% compared to hardware ADCs, without sacrificing performance or functionality. Deploy anywhere: public cloud, private cloud, bare metal, virtual machines, and containers. Save time by performing common tasks through the built‑in NGINX Plus API. From NetOps to DevOps, modern app teams need a self‑service, API‑driven platform that integrates easily into CI/CD workflows to accelerate app deployment – whether your app has a hybrid or microservices architecture – and makes app lifecycle management easier.
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    Fluentd

    Fluentd

    Fluentd Project

    A single, unified logging layer is key to make log data accessible and usable. However, existing tools fall short: legacy tools are not built for new cloud APIs and microservice-oriented architecture in mind and are not innovating quickly enough. Fluentd, created by Treasure Data, solves the challenges of building a unified logging layer with a modular architecture, an extensible plugin model, and a performance optimized engine. In addition to these features, Fluentd Enterprise addresses Enterprise requirements such as Trusted Packaging. Security. Certified Enterprise Connectors, Management / Monitoring, and Enterprise SLA-Based Support, Assurance, and Enterprise Consulting Services
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    Gravwell

    Gravwell

    Gravwell

    Gravwell is an all-you-can-ingest data fusion analytics platform that enables complete context and root cause analytics for security and business data. Gravwell was founded to bring the benefits of usable machine data to all customers: large or small, text or binary, security or operational. When experienced hackers and big data experts team-up you get an analytics platform capable of things never seen before. Gravwell enables security analytics that go well beyond log data into industrial processes, vehicle fleets, IT infrastructure, or everything combined. Need to hunt down a suspected access breach? Gravwell can correlate building access logs and run facial recognition machine learning against camera data to isolate multiple subjects entering a facility with a single badge-in. We exist to provide analytics capabilities to people who need more than just text log searching and need it sooner rather than later at a price they can afford.
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