Open Source Windows Antivirus Software
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Antivirus Software for Windows
View 124 business solutionsBrowse free open source Antivirus software and projects for Windows below. Use the toggles on the left to filter open source Antivirus software by OS, license, language, programming language, and project status.
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ClamWin
Antivirus software with virus scanning and virus definition updates
Looking for free Open Source Antivirus for Windows? Download ClamWin Free Antivirus and get free virus scanning and free virus definition updates. Free Antivirus software for Windows, using the well-respected ClamAV scanning engine. Includes virus scanner, scheduler, virus database updates, context menu integration to MS Windows Explorer and Add-in to MS Outlook. Also features easy setup program. -
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ClamAV
Antivirus engine for detecting trojans, viruses and malware
ClamAV is an open-source antivirus engine developed by Cisco Talos that provides cross-platform malware detection for servers, desktops, and mail systems. Originally designed for Unix environments and email security, it has evolved into a flexible antimalware toolkit capable of identifying millions of viruses, worms, trojans, and other threats. The software includes a command-line scanner, an automatically updating signature database, and a scalable multi-threaded daemon that enables high-performance scanning in production environments. ClamAV is widely used in mail gateways, file servers, and security pipelines because it can inspect compressed archives, common document formats, and executable files. Its bytecode signature system allows advanced detection logic while ensuring signatures are trusted and securely distributed. -
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dex2jar
Tools to work with android .dex and java .class files
Mirrors: * https://bitbucket.org/pxb1988/dex2jar * https://github.com/pxb1988/dex2jar dex2jar contains following compment * dex-reader is designed to read the Dalvik Executable (.dex/.odex) format. It has a light weight API similar with ASM. * dex-translator is designed to do the convert job. It reads the dex instruction to dex-ir format, after some optimize, convert to ASM format. * dex-ir used by dex-translator, is designed to represent the dex instruction dex-tools tools to work with .class files. * d2j-smali disassemble dex to smali files and assemble dex from smali files. different implementation to smali/baksmali, same syntax, but we support escape in type desc "Lcom/dex2jar\t\u1234;" * dex-writer write dex same way as dex-reader. -
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Shortcut Virus Removal Tool
Powerful and Easy to Use USB Shortcut Virus Removal Tool for Windows
Shortcut Virus Removal Tool (SVRT) Shortcut Virus Removal Tool is a powerful, portable, easy to use and safe program for fixing USB drives, external HDD / SSD drives and computers infected with shortcut virus. With only one click, you can remove shortcut virus from your computer and USB disk drive. It can restore files hidden by a virus and remove suspicious shortcuts and files from your USB drive and computer. It can repair registry and undo unwanted changes made by malware. It can also delete autorun virus from your USB drive. It can also vaccinate your computer and USB. It has a very simple interface. You just have to select your USB drive from list and click Clean button. If the tool does not work, please right click and "Run as Administrator." You can send me translations in JSON format. See how to: https://deuteriumsoftware.com/translate The tool currently supports five different languages. This tool requires .NET Framework 4.0 and Windows XP or later. -
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Antivirus Live CD
4MLinux fork including ClamAV scanner
Antivirus Live CD is an official 4MLinux fork including the ClamAV scanner. It's designed for users who need a lightweight live CD, which will help them to protect their computers against viruses. Ethernet, WiFi, and USB tethering are supported by Antivirus Live CD to enable automatic updates of its virus signature databases. All partitions are mounted during the boot process so that they can be scanned by ClamAV. The Antivirus Live CD ISO images are fully compatible with UNetbootin and Ventoy, which can be used to create an easy-to-use Antivirus Live USB. -
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Clam sentinel is a program that detects file system changes and automatically scans the files added or modified using ClamWin. Require the installation of ClamWin. For Microsoft Windows 98/98SE/Me/2000/XP/Vista, Windows 7 and Windows 8.1.
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HOL Guard
Open-source antivirus for AI agents
HOL Guard is an open-source security layer designed to protect AI agents and their local tool ecosystems at runtime. It evaluates supported actions for secret exposure, prompt injection, unsafe commands, malicious packages, and risky MCP interactions. Safe operations can proceed automatically, while known threats are blocked and ambiguous actions can require human approval. The platform also examines plugins, skills, hooks, package installs, and agent configurations before they are trusted. It integrates with major coding agents including Claude Code, Codex, Cursor, Gemini CLI, OpenCode, and GitHub Copilot CLI. Local operation requires no cloud account, while optional cloud services add synchronized evidence, shared policies, fleet visibility, and team approvals. -
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Robolinux
Announcing Robolinux Cinnamon 14.1
Announcing The New Robolinux Series 14 Mate LTS - 2034 Robolinux is very pleased to announce a completely new 14.1 Mate privacy centered 1inux operating system you can download freely while also offering our users an optional 14+ advanced upgrade which comes with our Untracker and FAAST Boot along with one click popular privacy software installers like Tor and I2p, Wireshark and Bleachbit plus many more for a fair and reasonable price. Robolinux14.1-Mate is ideal for beginners and advanced users. We are proud that it comes with Enoch AI which is TOTALLY 100% PRIVATE, FREE, HONEST & UNCENSORED built into Robolinux Cinnamon 14.1 The Robolinux 14.1 version with rock solid Long Term Support through 2034! requires users to set secure boot in their BIOS. It is currently available in the Cinnamon desktop flavor. we will release series 14 Xfce version in the next two months.For more information please see Readme file. Warmest regards John Martinson Robolinux.org -
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CyberGod KSGMPRH
Open-Source antivirus for Windows
This is an effective tool which is capable of detecting thousands and thousands of malware in your PC, including the shortcut virus to nasty ransomware, The database is regularly updated. See the video for how to use this tool. Version: 1.3 MD5: 707D4BE2AA4547A542A7EEFDB7BC4C4D SHA-1: 899B80928DF59C5745B56480DAA6A51E7F65CB18A4 Source code MD5: 38B3A08D62E7ADD2EE30FCA375207499 IMPORTANT: =========== FULL VERSION : https://sourceforge.net/projects/cybergod-ksgmprh/ NOTE: ===== If this tool has helped you consider supporting it please http://bit.ly/supportCyberGodKSGMPRH via paypal http://bit.ly/CyberGodSecurityDonate -
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optiSCAN
Scanner antivirus gratuit (ClamAV + YARA) pour Windows
🛡️ Antivirus gratuit pour Windows 10/11 Scanner antivirus pour Windows qui combine ClamAV (GPL-2.0) et les règles YARA pour repérer virus, malwares et fichiers suspects. Interface claire, en français et en anglais. Aucun compte, aucune publicité, aucune télémétrie. Fonctionnalités Analyse à la demande : fichier, dossier ou disque Scan depuis le clic droit de l’Explorateur Mise en quarantaine et suppression des menaces Mise à jour des signatures ClamAV et YARA Exclusion manuelle du dossier optiSCAN dans Windows Defender, après l’installation Export PDF des rapports d’analyse Protection en temps réel en option (service Windows, désactivée par défaut) Prérequis : Windows 10 (version 1809 ou plus récente) ou Windows 11, et le runtime .NET 8 Desktop. Licence : gratuiciel. Usage personnel et redistribution à l’identique autorisés. Modification et commercialisation interdites. Auteur : Dona By https://github.com/1donatien0/optiSCAN -
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USB Paranoiac
USB Security Scanner on Linux
This program allows you to examine suspicious USB storage devices before plugging them into your Windows computer. This is not an antivirus; it does not have heuristic or automatic detection-cleanup features. Just so you know, executable files are worth your attention. You decide whether they're dangerous or not. https://github.com/shampuan/USB-Paranoiac -
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Spybot Search and Destroy
Protect your computer against malware
Spybot - Search & Destroy is an anti-spyware and privacy protection tool that has been providing quality security solutions since the early 2000's. Spybot S&D provides complete anti-malware and anti-spyware protection as the System Scan aims to detect and remove all kinds of threats from your Windows PC. These include Adware, Spyware, Trojans and many more. Spybot's Immunization feature keeps you safe online by preventing access to malicious sites and blocks tracking cookies. Spybots Forensics Detectives are constantly on the look out for the latest forms of malware and continuly adding new detection rules. -
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A tool to block viruses in USB flash/disk from auto-running. When a USB disk is inserted, this tool not only locks the "autorun.inf" file, but also locks all the autorun-related virus and other suspicious files.
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clamwin portable
portable zipped version of the free and open source antivirus ClamWin
portable zipped version of the free and open source antivirus ClamWin. ClamWin is a Free Antivirus program for Microsoft Windows 10 / 8 / 7 / Vista / XP / Me / 2000 / 98 and Windows Server 2012, 2008 and 2003. ClamWin Free Antivirus is used by more than 600,000 users worldwide on a daily basis. It comes with an easy installer and open source code. You may download and use it absolutely free of charge. Just unzip and run \bin\ClamWin.exe http://www.clamwin.com https://sourceforge.net/projects/clamwin -
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HydraDragonAntivirus
Open Source Antivirus/XDR for Windows operating system
Dynamic and static analysis with Real Time Malware Analysis with Antivirus for Windows, including open-source XDR (3 EDR projects), ClamAV, YARA-X, machine learning AI, behavioral analysis, Unpacker, Deobfuscator, Decompiler, website signatures, Ghidra, Suricata, Sigma, Kernel, Hypervisior based protection and much more than you can imagine. -
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RogueKiller
The next generation virus killer. Remove unknown malware
The next generation virus killer. Remove unknown malware, stay protected. Free virus cleaner for everyone. Thanks to its powerful engine RogueKiller is able to find known and unknown malware, of all kind. Search and clean viruses, ransomware, trojans and other malware. Powered with innovative Artificial Intelligence and Cloud signatures engine, RogueKiller is the best virus removal tool. Try our free virus cleaner now for free ! RogueKiller antimalware software is shipped with state-of-the-art malware protection. The real time protection stops infected programs before they execute. Don't let malicious software setup, stop them before they do harmful actions! Protect your important documents against corruption and theft. With the increasing threat of Ransomware, it's very important to keep your documents secured. Don't be the next victim of a thousand dollars ransom, turn RogueKiller anti ransomware protection on! -
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Shortcut Virus Remover
Sample and fast software to remove Shortcut Virus
Shortcut Virus Remover is an easy to use application, capable of detecting the presence of the Shortcut threat. The software can easily fix the damage done by the virus, thus restoring all the icons in the selected drive. The application is lightweight and requires only that you select the drive you wish to clean. -
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ComboFix
Scan for and remove malware and spyware
Combofix is a freeware program that scans and removes malware and spyware from computers running Windows XP, Vista, 7, and 8. It was created by sUBs and is designed for advanced users. Combofix can remove malware that other products cannot. It backs up your registry hives, quarantines files, and creates a log of its actions. -
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EG ClamNet Antivirus
A simple antivirus that provide a graphical interface for ClamAV
EG ClamNet Antivirus provides a graphical user interface for ClamAV Executables. EG ClamNet antivirus is simple and user friendly antivirus (currently for Windows OS ) that uses ClamAV as an internal scanning engine to detect trojans, viruses, malware and other known malicious threats. It can be installed on the existing default windows antivirus (Windows Defender) and compatible with it as extra protection. 1) Antivirus & Internet Security: EG ClamNet Antivirus is powered by ClamAV which has fast scanning, detects over 9 millions viruses, malware, worms and trozens. It also protects from MS Office macro viruses, mobile malware, other threats (including known ransomware). 2) Cleaner: EG ClamNet Antivirus has an additional feature of effective cleaning of junk files. With this feature you can optimize your system, increase memory space and system speed by cleaning junk files. Cleaning such junk files improves your system's security and speed-up your system. -
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Simple Read-Only protection tool for removable devices. Make Empty File on selected disk with required size. Most common usage - place executable file on USB-flash drive and run it for space filling. When free space will need, delete empty file.
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Removes most common pen drive viruses such as autorun.inf, new folder.exe, bha.vbs, ravmon.exe, etc.....
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USBRescueX
Rescue and clean your hard disk or USB memory, delete broken shortcuts
USBRescuex in its version 2.1 is a computer program category in utility software for files and folders, which its main function is the recovery of hidden files, read-only and corrupted our device (either USB memory devices, removable storage or hard disk). Besides recover those important files for you , eliminates the famous RECYCLER virus , which is the basis of other USB flash drives for viruses , this virus is the main wrongdoer in your USB/Storage Device/Device Storage space Removable memory/disk hard, as the virus will hide all your files and folders , creating false shortcuts and reproducing more viruses to your computer and other USB/removable Devices/Hard Drives storage. The USBRescueX is a lightweight program easy to use and takes up very little space in your computer memory , and is portable version, optimized to run on any windows operating system than Windows XP or higher . -
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AdwCleaner is a free tool that will scan your computer and efficiently removes Adware (ads softwares), PUP/LPI (Potentially Undesirable Program), Toolbars, Hijacker (Hijack of the browser's homepage). It also features anti adware host that will help to prevent advertising software from installing on your machine. It works with a Search and Delete mode. It can be easily uninstalled using the mode "Uninstall". AdwCleaner is now part of the Malwarebytes family. We at Malwarebytes are big fans too. That's why we've asked Jerome Boursier, Corentin Chepeau, and the rest of the AdwCleaner team to join us. We're now working together to make a malware-free existence a reality for everyone. Don't worry--we will maintain, support, and keep AdwCleaner free for everyone. We believe in its mission, and will be integrating its technology into Malwarebytes products in the future. Learn more about the acquisition.
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ClamSAP exists of two 'C' shared libraries which link between ClamAV and the Virus Scan Interface (VSI) of SAP (offical name: NW-VSI). A SAP application can use the ClamAV engine to scan for malicious uploads in HTTP uploads for example.
