Best Free Computer Security Software
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Compare the Top Free Computer Security Software as of July 2025
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What is Free Computer Security Software?
Computer security software helps protect devices, networks, and sensitive data from unauthorized access, cyberattacks, and other security threats. These tools provide a range of protective features such as antivirus, firewall, encryption, malware detection, and intrusion prevention systems. Computer security software is essential for safeguarding against viruses, ransomware, spyware, and phishing attacks, ensuring the integrity, confidentiality, and availability of data. Many security solutions also offer real-time monitoring, automated updates, and threat intelligence to detect and mitigate new vulnerabilities as they emerge. Businesses and individuals rely on computer security software to reduce risks, comply with regulations, and maintain a secure computing environment. Compare and read user reviews of the best Free Computer Security software currently available using the table below. This list is updated regularly.
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1
USBSecure Enterprise
Lugrain Software
USBSecure Enterprise is a USB port security software. It protects your corporate network from unknown USB devices. You can define allowed USB devices in whitelists on a per-user basis. Centralized management - no dedicated server required. USBSecure Enterprise supports USB devices, Bluetooth devices, FireWire and eSATA devices, SD cards, floppy and CD/DVD drives. A special OT version is also available (Operational Technology). USBSecure supports English and German languages, but is customizable to any other language.Starting Price: $ 298 for 10 PCs -
2
CySight
IdeaData
CySight's Dropless Collection method provides absolute data retention, enabling the most data orientated decision making and cost-effective workflow for any organization, significantly enhancing network performance, network security and cyber intelligence to the highest level. With a Unique approach, CySight delivers comparative baselining, superior granularity, scalable collection, root cause analysis and QoS Analysis. All Designed to run independently or work together as a powerful single unit. CySight empowers communication and application visibility for networking, security, billing and compliance with high-end integrated network traffic analytics, granular forensics, cybersecurity intelligence, cloud usage, internet-of-things analytics, peering and billing to medium and large enterprise customers and service providers. Our objective at CySight is to reveal your data’s potential and eliminate all blind spots.Starting Price: $299/month -
3
FileAudit
IS Decisions
Proactively track, audit, report, alert on and respond to, all access to files and folders on Windows Servers and in the cloud. Monitor, in real time, access to sensitive files stored on both Windows Servers and in the cloud. Powerful filtering helps you find the answers you need quickly; tracking IP address and machine name pinpoints the exact access. Set up email alerts and a triggered response for access events (access denied - file deletion - a specific user, machine or IP address - time of access) and mass access events such as the copy, deletion or movement of bulk files. Review a searchable, secure and always-available audit trail. Analyze the access to and usage of files stored both on-premises and in the cloud. Schedule centralized reports according to multiple criteria.Starting Price: $826 one-time payment -
4
SpyShelter
SpyShelter
SpyShelter Anti Keylogger monitors behavior of all currently ongoing actions on your PC and allows you to prevent any action that malware attempts to make. Thanks to our unique technology, SpyShelter is capable of stopping both commercial and custom-made keyloggers, which cannot be detected by any anti-virus software. Since SpyShelter does not rely on any fingerprint database, you will not have to worry about zero-day malware – your registry, RAM and all applications are going to be protected from the moment you install SpyShelter. Compared to other security software, SpyShelter’s fast algorithm processing does not slow your computer down, making it suitable even for older computers. SpyShelter Anti Keylogger provides solid protection in real time against known and unknown “zero-day” spy and monitoring software, for example: keyloggers, screen loggers, webcam loggers, and even advanced financial malware.Starting Price: $25 per year -
5
GhostVolt
GhostVolt Ltd
GhostVolt is a security App which protects your privacy and stops unauthorised access to your files and folders and helps fight against cybercriminals who want to steal your data and use it for identity theft, ransomware, blackmail, and other criminal attacks. With GhostVolt, you can secure all your personal files including your health records, photos, movies, tax returns or any other document so you’re in control of who has access to your files and data, all the time. All your files are automatically encrypted with industry standard 256 AES encryption and because it works just like your regular file manager, you already know how to use it. GhostVolt works perfectly with Microsoft OneDrive and allows you to automatically backup and sync your protected files across your computers, you also get an integrated secure note manager, secure file sharing, file comments and tagging and so much more.Starting Price: $20 per year -
6
BlueFiles
Forecomm
How do you do today when you need to quickly send a confidential file or email to a customer, partner, or employee outside of your company, outside the secure network? CNIL strongly advises businesses and organizations to " use data encryption during transfers " and " have people trained in the risks ". Data encryption is a central part of the modern data protection strategy. Using specialized encryption, like BlueFiles, companies can encode their data so that it becomes indecipherable to anyone but the intended recipient. BlueFiles provides a real guarantee on all your digital data transfers: Integrity of the BlueFiles file, 100% confidentiality, remote control of the files sent, and tracking. Save time, ease of use, and lower costs, we need to communicate with confidence over the Internet without the risk of our sensitive data being disclosed. Under the GDPR law, companies must take steps to encrypt their personal data flows or face high fines. -
7
BeyondTrust Password Safe
BeyondTrust
Discover, manage, audit, and monitor privileged accounts of all types. Scan, identify and profile all assets and applications with auto-onboarding of privileged accounts. Store, manage and rotate privileged account passwords, eliminating embedded credentials and ensuring password strength. Log and monitor all privileged credential activity and sessions for compliance and forensic review. Use Password Safe to get finely-tuned and automatic password management and privilege approval controls, detailed session management (including real-time monitoring), and all the audit trail information and forensics needed to meet compliance requirements. Automatically discover and onboard accounts. Store, manage and rotate privileged passwords, eliminating embedded credentials in scripts and code. Log and monitor all privileged credential activity and sessions for compliance and forensic review.
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