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ClamWin Antivirus

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  -  225.86 MB  -  Open Source
  • Latest Version:

    ClamWin LATEST

  • Requirements:

    Windows XP / Vista / Windows 7 / Windows 8 / Windows 10

  • User Rating:

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  • Author / Product:

    ClamWin Pty Ltd. / ClamWin Antivirus

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ClamWin Antivirus is anti-virus software for Windows. It provides a graphical user interface to the Clam AntiVirus engine. It uses the GNU General Public License. ClamWin comes with an installer and open-source code at no cost.

ClamWin Free Antivirus is used by millions of 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.


  • High detection rates for viruses and spyware.
  • Scanning Scheduler.
  • Automatic downloads of regularly updated Virus Database.
  • Standalone virus scanner and right-click menu integration to Microsoft Windows Explorer.
  • Addin to Microsoft Outlook to remove virus-infected attachments automatically.

ClamWin is an open-source antivirus software designed for all versions of Microsoft® Windows® operating systems. It stands out as one of the simplest and easiest-to-use antivirus products available. Notably, it is the only free antivirus solution for Windows® users, making it an attractive choice for those seeking cost-effective protection.

Powered by the ClamAV engine, it boasts a high virus and spyware detection rate, a convenient scanning scheduler, and seamless integration with Microsoft® Windows® Explorer. Additionally, for users looking for a portable version, ClamWin Portable is available as a standalone app.

However, it's important to note that ClamWin Free Antivirus does not currently provide an on-access real-time scanner. This means that manual scanning of files is necessary to check for malware. Nevertheless, users have the option to scan individual files, folders, or entire partitions, and schedule recurring scans accordingly.

Review: The Power of Education and Common Sense in Security

Over the past 15 years, I have tried and paid for various antivirus licenses, leading me to a valuable realization: the most effective protection against viruses, trojans, worms, backdoors, adware, and spyware lies in user education and "common sense" security practices.

By no means do I suggest becoming a security expert or computer guru. Instead, basic knowledge is crucial—for instance, avoiding the download of email attachments from unknown sources, refraining from visiting suspicious websites such as those containing explicit content, and scanning files before opening them. Numerous resources available on the Internet offer comprehensive security tips. In addition to education, having access to a reliable set of free tools is essential.

I learned this lesson the hard way many years ago when I lost all the data on my computer, despite using a fully licensed, paid antivirus product that was up-to-date. Unfortunately, it failed to recognize a dangerous variant of the Virut virus. Subsequent scans with other antivirus products successfully detected the virus, but none were able to clean my hard drive. Consequently, I had to overwrite the entire hard drive and reinstall the operating system from scratch.

Considering this experience, one may wonder: Is ClamWin merely another "free" antivirus solution? Let's delve into its features and find out.


  • High detection rates for most viruses and spyware.
  • Flexible scan scheduling capabilities.
  • Automatic downloads of virus databases.
  • Standalone virus scanner with seamless integration into Windows Explorer.
  • Automatic addition to Outlook and removal of infected attachments.

The phrase "the only open-source and 100% free antivirus" catches the eye, indicating that users will never need to purchase a license, and the source code is publicly available. This availability allows other security experts to inspect the code—an advantage worthy of separate discussion.


Q: What is ClamWin?
A: ClamWin is a free, open-source antivirus software designed to protect your PC from various types of malware, including viruses, trojans, worms, and other malicious threats.

Q: How does ClamWin Antivirus detect and remove malware?
A: It uses the ClamAV scanning engine to detect malware. It scans files on your PC and compares them against an extensive database of virus signatures. If a match is found, it removes or quarantines the infected files.

Q: Does ClamWin provide real-time protection?
A: No, ClamWin Antivirus does not offer real-time protection. It requires manual scanning and does not actively monitor your system in the background. You need to initiate scans to check for malware.

Q: How often should I update ClamWin Antivirus?
A: It is recommended to update the app at least once a day. New virus signatures are frequently added to the database, and updating ensures you have the latest protection against emerging threats.

Q: Can ClamWin Antivirus remove all types of malware?
A: The AV program is effective against various types of malware, but it may not catch all threats. It primarily focuses on viruses and other malicious software, so using additional security measures alongside ClamWin is advisable.

Q: Can I schedule scans with ClamWin Antivirus?
A: Yes, you can schedule scans with the Antivirus. In the program's settings, you can define a specific time and frequency for automated scans, allowing you to scan your PC without manual intervention.

Q: Is ClamWin Antivirus FREE for commercial use?
A: Yes, the software is free for personal and commercial use. You can use it in both non-profit and commercial environments without any licensing fees.

Q: How do I report a false positive or suggest improvements for ClamWin?
A: If you encounter a false positive (legitimate file flagged as malware) or wish to suggest improvements, you can visit the ClamWin website and navigate to their forums or support section. There, you can report issues and provide feedback to the development team.


Avast Free Antivirus: It offers a similar free antivirus solution with features like real-time protection, virus scanning, and web protection.

Avira Free Security: It provides robust antivirus protection, privacy tools, and a VPN service.

Bitdefender Antivirus Free Edition: It offers a lightweight antivirus solution that provides essential malware protection without compromising system performance.

System Requirements

  • Operating System: Windows 11, Windows 10, Windows 8/8.1, Windows 7, Windows Vista, Windows XP, Windows Server 2012/2008/2003
  • CPU: Intel Pentium 4 processor or equivalent
  • RAM: 1 GB or higher
  • Disk Space: 600 MB of free space
  • Internet Connection: Required for downloading virus definitions updates


  • Free and Open-Source
  • Regular Virus Definition Updates
  • Lightweight Resource Usage
  • Customizable Scanning Options
  • User-Friendly Interface


  • No Real-Time Protection
  • Limited Malware Detection
  • Lack of Advanced Features
  • Slow Scan Speed
  • Inconsistent Customer Support


As a free antivirus option, ClamWin surpasses expectations. If you are on a tight budget, it may be the ideal choice for you. However, it's important to recognize that good protection does not have to be expensive. If your habits or work requirements expose you to frequent risks, it may be wise to consider alternative antivirus solutions that offer additional protection features.

Moreover, it's crucial to acknowledge that Windows is considered the most vulnerable operating system on the market. Therefore, if you choose to use it, investing in extra protection is strongly advised. Implementing a firewall, incorporating one or more anti-malware products that do not interfere with popular antiviruses, or utilizing an anti-keylogger can significantly bolster security.

While the app offers a basic level of protection, it should be viewed as a starting point. Keep in mind that numerous subscription-based tools with premium prices often come bundled with automated conveniences and unnecessary extras that may not necessarily enhance protection. However, this discussion extends beyond the scope of this review.

As with any antivirus software, it is highly recommended that you thoroughly evaluate your options and explore several comparable antivirus tools before committing to ClamWin for your primary computer's protection.

Note: ClamWin does not offer an on-access real-time scanner, which means that the user will have to manually scan the files for possible infections.

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