Best Free Computer Security Software
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Compare the Top Free Computer Security Software as of April 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
ManageEngine Endpoint Central
ManageEngine
ManageEngine's Endpoint Central (formerly Desktop Central) is a Unified Endpoint Management Solution, that takes care of enterprise mobility management (including all features of mobile application management and mobile device management), as well as client management for a diversified range of endpoints - mobile devices, laptops, computers, tablets, server machines etc. With ManageEngine Endpoint Central, users can automate their regular desktop management routines like distributing software, installing patches, managing IT assets, imaging and deploying OS, and more.Starting Price: $795.00/one-time -
2
GlassWire
GlassWire
Instantly see who or what your PC is talking to on GlassWire's network monitoring graph, plus see what your PC may have connected to in the past. Detect spyware, malware, badly behaving apps, and bandwidth hogs, then block their connections. Monitor other PCs on your network and get alerted when new unknown devices join your WiFi. GlassWire warns you of network related changes to your PC, or unusual changes to your apps that could indicate malware. GlassWire offer a Consumer Solution and a Business solution, to suit the needs of both personal users and IT professionals. Among the features: Real-Time Monitoring to keep an eye on active and past network activity Threat. Threat Detection. GlassWire's built-in firewall detects and blocks potential threats. Application Tracking to Identify which applications are using your network and track their usage patterns. Bandwidth Usage, to stay informed about data consumption, And many more!Starting Price: $35.88/year/user -
3
ActivTrak
Birch Grove Software
ActivTrak’s workforce intelligence platform transforms work activity data into actionable insights to optimize performance management and boost business productivity. Unlike traditional employee monitoring tools, ActivTrak is the only complete solution with employee monitoring, productivity and performance management, and workforce planning capabilities that deliver measurable ROI in just weeks. Key differentiators include: - Enterprise-class scale to accelerate time-to-value - Employee-centric approach to ensure data privacy - AI-powered insights to help prioritize actions - Best-in-class expertise to optimize outcomesStarting Price: $10/user/month billed annually -
4
Threatcop
Threatcop
Threatcop is a cyber security simulator and awareness tool that launches dummy cyber attacks on employees followed with awareness modules and gamified assessment. It simulates and imparts customized awareness based on top 6 attack vectors namely Phishing, Ransomware, Vishing, SMiShing, Cyber Scam and Removable Media. It compares the pre and post cybersecurity awareness levels of employees and provides a comprehensive report on individual user awareness as 'Employee Vulnerability Score (EVS)'. The awareness videos, advisories, newsletters and gamified quiz are customized with respect to the EVS score, thus, ensuring cyber resilience. It is a complete suite for your employees' cyber security awareness. -
5
TunnelBear
TunnelBear
A more secure way to browse the web. TunnelBear encrypts your internet connection to keep your online activity private on any network. Just open the TunnelBear app, select a country, and flip the switch. Once you're connected, TunnelBear will work quietly in the background to keep your data secure. Hackers can steal passwords and data over insecure public WiFi. TunnelBear blocks them to keep you secure. Network owners and internet providers can see everything you do online. With TunnelBear on, they can't see a thing. Some content is only available in certain regions. TunnelBear changes your virtual location so you can see it anywhere. Ad services use your IP address to track your behavior across sites. TunnelBear stops them by assigning you a new IP. Some governments block popular websites and apps. TunnelBear unblocks them by changing your virtual location.Starting Price: $59.88/year/user -
6
Security Score
OPSWAT
OPSWAT Security Score helps you identify weaknesses in your computer security system and fix security issues that leave you vulnerable to cyber-attacks. 1. Download our free OPSWAT Security Score app and click on it to run. No installation is required! 2. Get Your Security Score and Identify Risks 3. Fix Your Security IssuesStarting Price: $0 -
7
VyprVPN
Golden Frog
Save 44% when you sign up now. Connect in a single click to enjoy privacy, peace of mind and unrestricted internet access. A VPN works by encrypting your internet connection to secure it and protect your privacy every time you go online. VyprVPN was founded in response to governmental surveillance, and our strong encryption keeps your information safe from hackers, identity theft and malware. It stops your ISP from tracking your every move and prevents advertisers from collecting and selling your valuable data. Break free from censorship with VyprVPN. Change your IP address to mask your location and escape internet restrictions imparted by governments, workplaces and organizations. Our obfuscated servers conceals your identity, protecting your traffic from leaking to your ISP’s DNS servers. Whether you’re lounging at home watching Netflix or using public wi-fi at a coffee shop, VyprVPN has an app for you. Use VyprVPN on all your devices to stay protected and connected 24/7.Starting Price: $5 per month -
8
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 -
9
Coro
Coro Cybersecurity
Coro puts an end to the security tool sprawl and to the constant worry that things have been overlooked. No need to check everything 10 times a day. Coro will take care of the ongoing security, and will alert you only when you need to take action. Coro analyses the threats to your entire business, takes action to eliminate the risk, and guides you on what to do next to improve your security posture. Coro is the central control point for sensitive data, practice data, and user activity, enabling you to enforce a wide range of security, compliance and governance policies. We scan every email for phishing, malware, ransomware and automatically eliminate threats. We automatically identify and block insider threats, accounts hacking, and malicious activities. We scan every file and email, or any data share for PII/PCI/PHI, and prevent confidential information leakage.Starting Price: $8.99 per user per month -
10
OneLogin
OneLogin
Secure critical company information and empower employees with OneLogin, a trusted identity and access management (IAM) solution for the modern enterprise. Designed to strengthen enterprise security while simplifying business logins, OneLogin is an excellent solution for companies looking to enforce security policies with ease. OneLogin includes top-rated features such as single sign-on (SS), unified directory, user provisioning, adaptive authentication, mobile identitiy, compliance reporting, and more. -
11
CWIS Antivirus Scanner
Cobweb Security
We ensure 100% protection for your website by providing 24/7 security monitoring. If any hackers attack or virus injection occurs, we will clean and repair your website instantly. 24/7/365 monitoring of your website in our situation room. If an attack occurs, our software engineers will get an instant notification and protect, clean (if needed) and fix your website in the shortest possible time. Website clean-up and repair within 12 hours. Reports & Alerts via email. 24/7 Technical support. With CWIS Premium, you will get the best protection at the most reasonable price. You will receive recommendations for security hardening. -
12
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 -
13
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 -
14
EventSentry
NETIKUS.NET ltd
Hybrid SIEM solution combining real-time (event) log monitoring with comprehensive system health & network monitoring provides users with a complete picture of their servers and endpoints. The included security event log normalization & correlation engine with descriptive email alerts provides additional context and presents cryptic Windows security events in easy to understand reports that offer insight beyond what is available from raw events. EventSentry's NetFlow component visualizes network traffic, can detect malicious activity and offers insight into bandwith usage. Keeping track of Active Directory changes is easy with EventSentry's ADMonitor component that records all changes to AD & Group Policy objects and provides a complete user inventory to help identify obsolete accounts. Various integrations & multi-tenancy available.Starting Price: $85.00/one-time -
15
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 -
16
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 -
17
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. -
18
Xeams
Synametrics Technologies
Xeams is, a secure and powerful complete mail server for Windows, Linux, Solaris, MacOSX and other flavors of UNIX. Xeams supports SMTP, POP3, and IMAP. It features a powerful spam filtering engine that eliminates up to 99% of junk email upon installation. The software offers a flexible approach to email, making it a very user-friendly server. Xeams can block 99% percent of all junk messages right out of the box. The filtering rules are fully customizable and get better as Xeams adapts to your email environment. IMAP and POP3 servers built right into the system to easily fetch emails from an email repository to a client's machine. Xeams can be used as an email firewall in front of another server, such as MS Exchange, or as a full email server requiring no other software to process emails. Use Xeams in front of your Office 365 infrastructure to gain additional filtering, reporting and archiving capabilities that you don't get with Office 365 alone.Starting Price: $20.00/year/user -
19
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 -
20
Microsoft Family Safety
Microsoft
Empowering you and your family to create healthy habits and help protect the ones you love. Set screen time limits that apply to devices, apps, and games. When screen time runs out, choose to add more or not, based on what’s right for you and your family. Create a safe space for your kids to explore online. Use the app's content filtering settings to set healthy boundaries, block inappropriate apps and games, and limit browsing to kid-friendly websites using Microsoft Edge on Xbox, Windows, and Android. Stay connected even when you’re apart with family location sharing and tracking. Share your location with loved ones, spot them on a map, and save places they visit the most. Get insights on how your family is doing on the road, including how many times the driver uses their phone, their top speed, and even the number of times they brake hard.Starting Price: $9.99 per month -
21
Trend Micro HouseCall
Trend Micro
The best free online virus scanner that you can get to identify hidden threats on your PC and Mac. Discover if your files are safe and block malicious software hidden outside of files. Threats can harm your device before you realize there is a problem. Use HouseCall to get your device back to normal. With the detailed report, you can see what threats have targeted your device and take quick action. With HouseCall, you can choose which scan to run, quick or full. You can even create a custom scan. Detect and fix viruses, worms, spyware, and other malicious threats for free. HouseCall can quickly find new threats on your Windows or Mac computer for free without getting in the way of your existing security software. You can count on HouseCall to keep malicious files off your device and stop them from spreading. HouseCall for Home Networks scans all of your home network devices for vulnerabilities and recommends how to eliminate them.Starting Price: Free -
22
ShieldApps Cyber Privacy Suite
ShieldApps
What you do online and on your computer should be your own business. Yet, in most cases, your personal information & web habits are being tracked constantly by 3rd parties who want to monetize your online behaviors or steal your identity. It takes powerful software to stave off malicious cyber attacks all day, every day. In our increasingly digital world, anyone is an easy target for a cyber attack. We put so much of our personal information online today, making it harder to guard against malicious hacking attempts. Our comprehensive software keeps you and your family safe at all times when using your devices or surfing the web. Cyber Privacy Suite fends off harmful privacy threats and proactively identifies where your information is vulnerable or exposed.Starting Price: $77.90 per 3 devices -
23
ShieldApps Webcam Blocker
ShieldApps
ShieldApps’ Webcam Blocker equips you with highly sophisticated security software that utilizes advanced privacy enhancement algorithms – packaged in a simple interface that allows single-click protection. ShieldApps Webcam Blocker prevents hackers from accessing and using information collected through a webcam and microphone against you. The clean and user-friendly design will give you easy, one-click control over both Webcam and microphone-blocking features. ShieldApps Webcam Blocker adds another layer of protection to your computer and a proactive privacy approach. Upon selecting the options any external or internal attempt to access the webcam will be denied.Starting Price: $29.99 one-time payment -
24
Protectstar Camera Guard
Protectstar
Put an end to spying and unsightly taping. Not only millions of users but also the founder of Facebook, Mark Zuckerberg, and former FBI chief James Comey are taping over the webcam of their devices. Everything and everyone is being spied on. We have known this since June 2013, when the first NSA documents by whistleblower Edward Snowden were published. But not only hackers found ways to misuse the webcam without a warning signal to the user: Also, the latest malware is highly dangerous because it specifically targets control of the integrated device camera. Then, with just one click, protection is enabled, and Camera Guard blocks and monitors processes that try to access your device's camera. Any security breach is reported. You can easily choose which apps on your device can access your camera or webcam. With Deep Detective, we have created an intelligent and versatile detective that monitors all accesses of the macOS device.Starting Price: $8.90 per year -
25
Google Chrome Enterprise
Google
Chrome Enterprise is a trusted browser solution designed for businesses to streamline operations while maintaining security and productivity. With enhanced security features, management controls, and integrations with existing enterprise ecosystems, Chrome Enterprise supports both traditional desktop setups and hybrid, remote work environments. It includes powerful features such as data loss prevention, Zero Trust access control, and centralized cloud management tools, ensuring your company’s data stays safe. Whether your team uses their own devices or company-issued hardware, Chrome Enterprise provides flexible, scalable, and secure access to business tools and resources.Starting Price: Free -
26
Cofense PhishMe
Cofense
Your employees need to be conditioned to spot and report phishing emails immediately. With Cofense PhishMe™, simulations are based on the latest threats known to bypass SEGs, empowering your users to become human threat detectors. With resilient users attuned to the latest phishing threats, you have the best organizational defense. Cofense PhishMe Playbooks let you configure a full 12-month program, complete with phishing simulation scenarios, landing pages, attachments, and educational content, in just a few clicks. Our Smart Suggest capability uses advanced algorithms and embedded best practices to recommend scenarios based on current active threats, industry relevance, and your program’s history. The most important part of your phishing defense is reporting and resiliency rates. Boost reporting and help users become active defenders with Cofense Reporter™, our one-click reporting button. -
27
Add essential protection against malicious websites and phishing, secure your browsing data, and get step-by-step privacy guidance. Our free browser extension is the perfect privacy starter pack. Secure your browser against online threats and phishing scams. Keep your online activity hidden, block online snoops, and get step-by-step privacy advice. Identify and block phishing scams in seconds. Get safer search engine results that show which sites are safe and which aren’t, before you visit them. Get real-time threat alerts when you come into contact with a suspicious web page. Keep your online activity hidden, block online snoops, and get step-by-step privacy advice. Keep your online activities private and anonymous. Optimize your privacy settings in seconds, across your favorite platforms, guided by our Privacy Advisor. Get privacy advice and easily manage your privacy settings across your favorite online platforms, with guidance from our new Privacy Advisor feature.Starting Price: Free
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28
AntiBrowserSpy
Abelssoft Ascora GmbH
As soon as we surf the Internet we are being monitored and spied on. By means of cookies and tracking, the online services called up can automatically determine from which country a visitor comes, what operating system is used and which browser is used. Our Windows tool AntiBrowserSpy dries up the involuntary data flow and sets up a muzzle for the web browser. The browser cloak of invisibility of the tool prevents the browsers: Chrome, Firefox, Opera and Microsoft Edge, that the user is recognized based on his typical browser "fingerprint". A Google Analytics Blocker and a local browser cleaning (cache, cookies and history) complete the range of functions. In addition, the integrated BrowserCheck checks after each surfing session whether something has changed in the browser settings, for example, due to an update, and informs you immediately if there are any deviations.Starting Price: $29.90 one-time payment -
29
Adaware Protect
Adaware
Adaware Protect is the all-in-one suite that includes Adaware Safe Browser to increase your online security. Adaware Protect's online security keeps your entire computer safe from suspicious websites. Adaware Protect blocks unsafe sites and lets you see what applications try to access malicious or unknown URLs. With one click, Adaware Protect allows you to block hackers and spyware from accessing your camera and microphone. When it's time to video conference, one quick click and you're ready to go. The Adaware Safe Browser gives you a faster more private way to navigate the web. Block ads for a faster browsing experience. Block cookies and trackers to keep from being tracked. Use our private search to keep your search history hidden. Choose your favorite features to optimize your PC’s performance. Scan and clean unnecessary files and applications on your PC from Adaware Protect. Keeping your computer safe has never been this easy!Starting Price: Free -
30
indeni
indeni
Indeni’s security infrastructure automation platform monitors firewall health and auto-detects issues like misconfigurations or expired licenses before they affect network operations. It automatically prioritizes issues so you only receive the most important alerts. Indeni protects your cloud environment by taking a snapshot of it before it’s built. Our cloud security analysis tool, Cloudrail, reviews your infrastructure-as-code files so you can identify violations earlier in development when they’re easier to fix. Constant detection of HA unreadiness from cross-device inconsistencies in security policies, forwarding tables, and other configurations and state. Consistent measurement of device configuration skew against locally-defined organizational standards. Collect relevant performance and configuration data from leading firewalls, load balancers, and other security infrastructure.