Best Free Cybersecurity Software
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Compare the Top Free Cybersecurity Software as of May 2025
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What is Free Cybersecurity Software?
Cybersecurity software is a category of technology used to protect computers and networks from malicious attacks. It operates by monitoring activity and blocking suspicious activity, as well as providing advanced security features such as encryption and authentication. It's an important tool for businesses to help ensure the safety of their data and systems. Compare and read user reviews of the best Free Cybersecurity software currently available using the table below. This list is updated regularly.
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1
Google Cloud Platform
Google
Google Cloud Platform provides a comprehensive suite of cybersecurity services to protect cloud resources, including encryption, identity management, and real-time threat detection. With tools like Google Cloud Armor for DDoS protection and Cloud Security Command Center for security insights, GCP ensures that businesses can safeguard their data and infrastructure. New customers get $300 in free credits to run, test, and deploy workloads, giving them the opportunity to evaluate GCP's security features and ensure robust protection for their applications. GCP’s security tools are designed to protect sensitive data across all layers of the cloud, from data storage to application deployment. Furthermore, Google’s multi-layered approach to security provides proactive defense, which includes automatic security patching, vulnerability scanning, and access control management.Starting Price: Free ($300 in free credits) -
2
Psono
esaqa GmbH
Psono is a self-hosted, open-source password manager designed to safeguard your data. It encrypts and stores your credentials, ensuring only you have access. You can also securely share encrypted access with your team. With a rich set of features, Psono makes data management and password retrieval simpler than ever. Its robust security includes client-side encryption for genuine end-to-end password sharing, supplemented by SSL and storage encryption. The entire code is open for transparent public auditing, emphasizing that true security lies in proper encryption rather than concealing flaws. Hosting Psono on your server offers enhanced access control, eliminating the need to depend on public services for data storage. Psono stands out as one of the most secure password managers, prioritizing the online safety of its users on their servers.Starting Price: Free -
3
Criminal IP
AI SPERA
Criminal IP is a comprehensive threat intelligence search engine that detects vulnerabilities of personal and corporate cyber assets in real time and facilitates preemptive responses accordingly. Originated from the idea that individuals and corporations would be able to strengthen their cyber security by proactively acquiring information about IP addresses attempting to access your network, Criminal IP uses its big data of more than 4.2 billion IP addresses to provide threat-relevant information on malicious IPs and links, phishing sites, certificates, industrial control systems, IoTs, servers, security cameras, and so forth. With Criminal IP’s 4 main features (Asset Search, Domain Search, Exploit Search, and Image Search), you can find IP risk scores and related vulnerabilities of searched IP addresses and domains, details on the exploit codes for each service, and assets that are left wide open to cyber threats in the form of images respectively.Starting Price: $0/month -
4
SharePass
SharePass
SharePass is a SaaS Secret Management platform that allows sharing and managing secrets and confidential information using a web application, extension, or mobile app. SharePass works with encrypted links transmitted from the sender to the receiver with various settings and flags. The settings include expiry restriction, availability, IP restrictions and an entire filtering funnel (patent pending). SharePass is platform-independent that can be used with your existing communication tools. When it comes to your privacy, SharePass or any of its employees cannot see the content of your secrets; the secrets can be seen only by the exchanging parties. SharePass meets the latest cybersecurity compliance and regulations. In the era of identity theft, SharePass will protect you and prevent your data from leaking to the dark web by eliminating your digital footprint. SharePass supports SSO with Office365, Google Workspace, MFA, and integration with Yubikeys for maximum security.Starting Price: Free -
5
MyChat
Network Software Solutions
Secure instant messaging system with own server that can work in local area network and over the Internet. Providing collaboration tools for employee engagement. Built-in knowledge base, important notifications with return receipts, Bulletin board, broadcast messages, flexible server management, the system for user rights to access MyChat features, voice/video calls, screen sharing calls, Kanban project management, conferences, private dialogues, extended contact list, available for all platforms: Windows, macOS, Linux, Android, iOS, WEB.Starting Price: $6/per user/one-time -
6
Verosint
Verosint
Verosint's Threat Detection, Investigation and Response platform provides real-time, intelligent ITDR for both workforce and customer identities. -Fastest MTTD & MTTR: Detect and respond to Identity based threats faster than anyone else in the industry -Detect Advanced Threats: Spot session hijacking, credential stuffing, account takeovers and more -Investigate Efficiently: Our customers say investigating incidents has gone from days to minutes with our AI Insights, unparalleled visibility and intelligence -Remediate Quickly: Automatically resolve identity threats with our integrated remediation playbooks -Easy to Deploy: Deploys in 60 minutes or lessStarting Price: $1/user/month -
7
GitGuardian
GitGuardian
GitGuardian is a code security platform that provides solutions for DevOps generation. A leader in the market of secrets detection and remediation, its solutions are already used by hundreds of thousands of developers. GitGuardian helps developers, cloud operation, security, and compliance professionals secure software development and define and enforce policies consistently and globally across all systems. GitGuardian solutions monitor public and private repositories in real-time, detect secrets, sensitive files, IaC misconfigurations, and alert to allow investigation and quick remediation. Additionally, GitGuardian's Honeytoken module exposes decoy resources like AWS credentials, increasing the odds of catching intrusion in the software delivery pipeline. GitGuardian is trusted by leading companies, including 66 degrees, Snowflake, Orange, Iress, Maven Wave, DataDog, and PayFit. Used by more than 300K developers, it ranks #1 in the security category on GitHub Marketplace.Starting Price: $0 -
8
FileWall
Odix
odix - a market leader in Enterprise CDR (Content Disarm and Reconstruction), is now offering FileWall, a native cybersecurity application for Microsoft Office 365 mailboxes for SMEs. FileWall™ is designed to run in conjunction with existing Microsoft security solutions such as EOP and ATP, ensuring complete prevention against unknown attacks delivered via email attachments. FileWall™ doesn’t harm/change any of Microsoft sender related security capabilities.Starting Price: $1 per user, per month -
9
Cloudflare
Cloudflare
Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.Starting Price: $20 per website -
10
SafeDNS
SafeDNS
At SafeDNS, we are committed to creating a safer and more secure online environment for SMBs, enterprises, ISPs, MSPs, OEMs, and Education. We have a global footprint, making the internet safer for millions of users in over 60 countries. With years of experience in the field of cybersecurity and DNS filtering, we offer cutting-edge solutions to safeguard your digital life. At present, SafeDNS serves more than 4000 businesses and institutions, and tens of thousands of home users worldwide. We do: -Web content filtering. We help you block all dangerous or unwanted websites such as pornography, violence, child sexual abuse and similar categories. -Malware protection. We also have your back against malicious sites trying to breach user devices either with viruses or information theft intent. -Cloud service. Additionally, we provide you with a cloud filtering service that requires no additional hardware purchase or software installation.Starting Price: $0.9/user/month -
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FlashStart
FlashStart Group Srl
FlashStart is a global, cloud-based cyber security platform that specializes in DNS filtering with the support of artificial intelligence. It protects against malware and unwanted contents by classifying domains into eighty-five categories, using machine learning with high predictive capability and incorporating government blacklists and warnings for high-risk sites. It offers global coverage, thanks to Anycast Network, which is among the fastest and most stable in the world. It presents advanced and exclusive features, like geographically based protection. Easy installation, centralized multi-tenant management, filter customization, and maximum cost-effectiveness make FlashStart the optimal cloud solution for businesses, PAs, schools, households, etc.Starting Price: $0.90/month -
12
Quixxi
Quixxi Security
Quixxi is a leading provider of mobile app security solutions that empowers enterprises and security professionals to secure their mobile applications. Quixxi is proud to be the only provider of a patented and proprietary mobile app security solution. Our services includes SCAN, SHIELD, and SUPERVISE. SCAN (SAST/DAST/WebAPI) is a comprehensive application vulnerability assessment tool that automates and integrates with the development process, providing full explanations and recommendations to identify and fix vulnerabilities. SHIELD (RASP), on the other hand, is an application shielding tool that provides baseline security controls to protect the intellectual property in mobile apps and shield them against malicious attacks by third parties with one click. SUPERVISE is a runtime application monitoring tool that enables remote disabling, messaging, security logs, and customer analytics for better app management.Starting Price: $29 for One-Off plan -
13
IPQualityScore
IPQualityScore
IPQualityScore's suite of fraud prevention tools automate quality control to prevent bots, fake accounts, fraudsters, chargebacks, & malicious users without interrupting the user experience. Detect bad actors and block cyber threats with industry leading IP reputation data and user validation. Proactively Prevent Fraud™ for less headaches and smoother operations.Starting Price: $49.99 per month -
14
passbolt
passbolt
Finally, a password manager built for collaboration. Secure, flexible, and automation-ready. Trusted by 10,000 organizations, including Fortune 500 companies, newspapers, governments, and defense forces. Passbolt servers are designed to be simple to install and easy to manage. Yet they are enterprise-ready and can support complex setup for high availability. Passbolt can be used from your browser or mobile phone. Sharing happens in real-time. Desktop apps are coming soon. Retrieve, store and share passwords programmatically with the JSON API. Automate at scale with Passbolt CLI. Real-time access logs. Privacy is in our DNA, but also in the DNA of European laws (to make sure we don’t change our minds). Passbolt self-hosted source code comes under an AGPL license. Yes, even the commercial version. You are free to audit it, contribute to it, and redistribute it. This is why we have a healthy community of thousands of organizations in all sectors.Starting Price: €45/month/10 users -
15
Cequence Security
Cequence Security
Start analyzing and protecting your APIs with passive, inline or API-based integration with any existing network component – API gateway, proxy, CDN or ingress controller. Predefined policies, fine-tuned using threat patterns observed in protecting billions of API transactions per day delivers unmatched, out-of-the-box protection. A rich user interface and an open, API-based architecture enables integration with threat intelligence feeds, CI/CD framework tools, other security components, and SIEM/SOAR/XDR solutions. Patented ML-based analysis eliminates JavaScript and SDK integration pen-alties such as extended development cycles, slow page loads and forced mobile-app upgrades. ML-based analysis generates a unique Behavioral Fingerprint to determine malicious intent and continually tracks attackers as they retool. -
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Apozy Airlock
Apozy
Apozy Airlock. The browser endpoint detection and response platform that neutralizes web attacks in one click. The Internet is a dangerous place. It doesn’t have to be. Airlock fills the gap in your EPP/EDR by protecting the browser, delivering a safe, clean, and lightning-fast internet experience. Powered by the very first visually-aware native browser isolation platform with over 6 petabytes of visual data, Airlock prevents web attacks in real time. Airlock stops spearfishing in its tracks. With a visual model database of over 67.83 billion pages which analyzes over 12.20 trillion links per year, our technology protects anyone clicking on a malicious link by sandboxing the threat.Starting Price: $9/month/user -
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Pentest-Tools.com
Pentest-Tools.com
Get a hacker’s perspective on your web apps, network, and cloud. Pentest-Tools.com helps security teams run the key steps of a penetration test, easily and without expert hacking skills. Headquartered in Europe (Bucharest, Romania), Pentest-Tools.com makes offensive cybersecurity tools and proprietary vulnerability scanner software for penetration testers and other infosec pros. Security teams use our toolkit to identify paths attackers can use to compromise your organization so you can effectively reduce your exposure to cyberattacks. What you can do with Pentest-Tools.com Built by a team of experienced penetration testers, Pentest-Tools.com is a web-based platform that speeds-up the common steps performed in almost every assessment: reconnaissance, vulnerability scanning, exploitation, and report writing. Using the 20+ built-in tools, you get quick insights into targets' weaknesses so you know where to dig deeper, pop shells, and have fun.Starting Price: $85 per month -
18
Beagle Security
Beagle Security
Beagle Security helps you to discover website & API security issues at the right time and address them in the right way. AI-powered core for test case selection, false-positive reduction & accurate vulnerability assessment reports. Integrate with your CI/CD pipeline & communication apps for an automated and continuous vulnerability assessment process. Fix security issues by following the actionable steps provided and improve your website’s security. Get assistance from our security team if you need help addressing a specific security issue or for anything relating to security. Built with the vision to provide affordable security solutions for growing businesses to address their concerns. Years of research and development combined with our industry experience lead to what we have today. We are continuously innovating to reduce human effort and improve the accuracy and efficiency of penetration testing with the help of artificial intelligence.Starting Price: $99 per month -
19
Mindgard
Mindgard
Mindgard, the leading AI security platform company, empowers businesses to safely leverage the benefits of building and consuming AI, LLMs, and GenAI. By guarding AI models against cyber security threats, as well as preventing data leakage when consuming public LLM/GenAI services, our platform protects data, digital assets, brands, and reputations. Designed to integrate with existing AI and Cyber Security frameworks, the Mindgard platform streamlines AI risk management, freeing up resources while ensuring comprehensive AI security that traditional cyber security tooling can't. Our advanced platform, developed from over four years of cutting-edge research at a leading UK university, automates security testing across your AI portfolio, allowing businesses to embrace AI technologies confidently and securely.Starting Price: Free -
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Tines
Tines
Tines provides the world's most security-conscious companies with no-code automation technology to power their business-critical processes. We believe automation works best when subject-matter experts, not distant developers, build it. Our drag-and-drop technology is intuitive but immensely powerful and flexible to give frontline staff everything they need to address repetitive manual processes. Tines allows users to gather internal or external events to trigger multi-step workflows. In line with our belief in approachable and powerful technology, Tines integrates with any technology that offers an API. This means customers aren’t limited to a fixed set of integrations, rather they are free to connect to any tool in their stack. This extends how they protect their business. With Tines, our customers are free from the burdensome, repetitive processes to focus on protecting their business from the next threat.Starting Price: $0/user/year -
21
KernelCare Enterprise
TuxCare
Global organizations trust TuxCare for live patching their critical Linux hosts and OT devices across their hybrid multi-cloud environments. No reboot is required to deploy and enable the TuxCare KernelCare Enterprise solutions to live patch Linux kernels and critical system libraries, including OpenSSL and Glibc. In contrast, all hosts and devices maintain the current production level uptime while receiving all security updates. TuxCare automates the patching process and eliminates the need to wait weeks or months for reboot cycles to apply patches. TuxCare currently protects over 1 million workloads worldwide. Tight integrations with popular patch management and vulnerability scanners, including Qualys, Crowdstrike, and Rapid7, enable TuxCare to fit seamlessly into existing infrastructure. The TuxCare secure patch server, ePortal, allows operations in gated and air-gapped environments. Reduce risk by significantly reducing the mean time to patch vulnerabilitiesStarting Price: $3.95 per month -
22
Zercurity
Zercurity
Bootstrap and build out your cybersecurity posture with Zercurity. Reduce the time and resources spent monitoring, managing, integrating, and navigating your organization through the different cybersecurity disciplines. Get clear data points you can actually use. Get an instant understanding of what your current IT infrastructure looks like. Assets, applications, packages, and devices are examined automatically. Let our sophisticated algorithms find and run queries across your assets. Automatically highlighting anomalies and vulnerabilities in real-time. Expose threats to your organization. Eliminate the risks. Automatic reporting and auditing cuts remediation time and supports handling. Unified security monitoring for your entire organization. Query your infrastructure like a database. Instant answers to your toughest questions. Measure your risk in real-time. Stop guessing where your cybersecurity risks lie. Get deep insights into every facet of your organization.Starting Price: $15.01 per month -
23
OnSecurity
OnSecurity
OnSecurity is a leading CREST-accredited penetration testing vendor based in the UK, dedicated to delivering high-impact, high-intelligence penetration testing services to businesses of all sizes. By simplifying the management and delivery of pentesting, we make it easier for organisations to enhance their security posture and mitigate risks, contributing to a safer, more secure digital environment for everyone. Pentesting, Vulnerability Scanning and Threat Intelligence all in one platform.Starting Price: $9.30 per month -
24
LUCY Security Awareness Training
LUCY Security AG
Train. phish. assess. engage. alarm. Lucy Security from Switzerland allows organizations to measure and improve the security awareness of employees and test their IT defenses. Turn employees into a human firewall with simulated attacks and our E-Learning platform with hundreds of preconfigured videos, training, quiz ready for usage. The most powerful IT Security Awareness Solution in the market. Fixed Prices | On-Premise or SaaS | Phish-Button | Threat Analytics | Over 10.000 installations and more than 25.000.000 trained users | 2020 Excellence Award for Best Anti Phishing. -
25
ActiveFence
ActiveFence
ActiveFence is the leading Trust and Safety provider for online platforms, protecting over three billion users from malicious behavior and content daily. Trust and Safety teams of all sizes rely on ActiveFence to keep their users safe from the widest spectrum of online harms, including child abuse, disinformation, hate speech, terror, fraud, and more. We offer a full stack of capabilities with our deep intelligence research, AI-driven harmful content detection and moderation platform. ActiveFence protects platforms globally, in over 100 languages, letting people interact and thrive safely online. -
26
SubdomainRadar.io
SubdomainRadar.io
SubdomainRadar.io is a powerful subdomain discovery platform tailored for cybersecurity professionals, penetration testers, and bug bounty hunters. It offers a wide range of functionalities designed to uncover hidden subdomains and assets within any target domain. With its ability to perform fast, medium, or deep scans, users can choose the level of depth they need depending on the target. Fast scans prioritize speed, while deep scans utilize a broader range of data sources and brute-force techniques to find obscure subdomains that other tools often miss. The platform pulls data from multiple enumerators, ensuring comprehensive coverage. Additionally, its reverse search functionality allows users to search based on subdomain or domain patterns, making it easier to uncover related assets. SubdomainRadar.io also provides an easy-to-use API that can be integrated into existing workflows, supporting automation and rapid subdomain discovery with a rate limit of five requests per second.Starting Price: $29.99 -
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Protect your organization from credential-stuffing attacks and third-party data breaches. Hundreds of billions of records, including email addresses, user credentials, and passwords, have been breached. Hackers use these records to brute-force their way into organizations’ systems and networks to carry out targeted attacks. HEROIC EPIC is an Identity Breach Intelligence Platform™ that discovers and prevents credential stuffing and account takeover attacks
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Pulsedive
Pulsedive
Pulsedive offers threat intelligence platform and data products to help any security team streamline their threat intelligence research, processing, management, and integration. Start by searching any domain, IP, or URL at pulsedive.com. Our community platform provides free capabilities to enrich and investigate indicators of compromise (IOCs), analyze threats, query across the Pulsedive database, and submit new IOCs in bulk. What we do differently: - Perform passive or active scanning on every ingested IOC, on-demand - Risk evaluation and factors shared with our users based on first-hand observations - Pivot off any data property or value - Analyze shared threat infrastructure and properties for different threats Our commercial API and Feed products support the automation and integration of our data within organization security environments. Check out our website for different tiers and offerings. -
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Filigran
Filigran
Embrace a proactive approach with end-to-end cyber threat management, from anticipation to response. Tailored to elevate cybersecurity through comprehensive threat intelligence, advanced adversary simulation, and strategic cyber risk management solutions. Get a holistic view of your threat environment and improved decision-making for faster incident response. Organize your cyber threat intelligence knowledge to enhance and disseminate actionable insights. Access consolidated view of threat data from multiple sources. Transform raw data into actionable insights. Enhance sharing and actionable insights dissemination across teams and tools. Streamline incident response with powerful case management capabilities. Create dynamic attack scenarios, ensuring accurate, timely, and effective response during real-world incidents. Build both simple and intricate scenarios tailored to various industry needs. Improve team dynamics with instant feedback on responses.
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