ClamAV Antivirus Review 2026: Is It a Good Antivirus?

Our Score
4.4
DECENT
 
 
Our Score
4.4
clamav.net
Sam Boyd
Sam Boyd Former Content Manager
Published on: June 7, 2020
Fact-checked by Hazel Shaw
Updated 2 times since publishing
Sam Boyd
Sam Boyd
Former Content Manager Published on June 7, 2020 Updated 2 times since publishing
Fact-checked by Hazel Shaw

ClamAV Review: Quick Expert Summary

ClamAV is a free open-source antivirus with decent malware detection ratings, but it’s the most difficult-to-use antivirus I’ve ever tested. It operates entirely within your command line and through PowerShell applications, giving it a steep learning curve that’s not worth committing to.

There’s no UI, so you need to manually type every line in your command prompt (cmd) or PowerShell. The user guides don’t provide enough of a tutorial; only technical experts would understand what they’re looking at. It’s a jarring experience compared to any modern antivirus, from Norton to Malwarebytes to niche options like IObit.

To set ClamAV up, you need to follow multiple complicated steps and type information into PowerShell. I immediately ran into problems: the steps in the user guide simply didn’t work.

ClamAV review 30-09

Even after entering command lines from the user guide, I experienced error after error. Sometimes, it felt like I got a few steps forward, and then I encountered another error. At first, I thought I was doing something wrong, so I sought help from one of my colleagues. They also experienced issues installing the app, setting it up, and trying to use it.

ClamAV review 30-09

Customer support helped me as best as they could. I have nothing but respect for the volunteer workers, but they couldn’t solve my issue.

ClamAV review 30-09

Overall, ClamAV is simply too complicated for the vast majority of users. I really like the idea of a free open-source antivirus, so it pains me to say it, but any top antivirus (and I mean “any”) will have a more beginner-friendly UI that lets you easily access and use its features. As an example, Norton comes with a stronger malware scanner that doesn’t require manually typing lines of code for every action. Instead, you can click the scan button and analyze your device in minutes.

Better and easier-to-use choices exist if you’re after a free antivirus. Bitdefender’s free scanner consistently scores a 100% malware detection rating during our tests and comes with real-time protection and an anti-phishing browser extension. TotalAV is an excellent choice for Android phones and Mac computers and also tests very well against viruses.

ClamAV is a great choice on Linux, though. If you’re using Linux, you’re likely already familiar with power shell apps, command lines, and complex procedures. In that case, ClamAV’s reasonably high detection ratings and the fact it’s free make it a solid choice.  However, for regular Windows/Mac users, many antiviruses on the market are much simpler and easier to use.

Bottom Line

Overall, ClamAV serves an exceptionally niche market and isn’t recommended for most people. It’s unbelievably convoluted and lacks advanced features that make it stand out against other free antiviruses. That said, it may be worth it for you if you’re a Linux user.

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About the Author
Sam Boyd
Sam Boyd
Former Content Manager

About the Author

Sam Boyd was the Content Manager at SafetyDetectives. He has years of experience writing, reviewing, editing, and optimizing blog articles, and he has researched and tested hundreds of cybersecurity products since joining the SafetyDetectives team. When he isn’t exploring the latest cybersecurity products, he enjoys chilling out with video games, watching sports, and exploring new parts of the world with his family.

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ClamAV User Reviews

*User reviews are not verified

7 2
Based on 9 reviews in 2 languages 7.7
Language
You can trust the Community! Companies can't ask us to delete or change user reviews.
Lee Higdon
Lee Higdon
United States
8.0
Minimalist Protection
iOS User
ClamXav provides essential protection. It captured every malware sample on Objective-See. Not every Mac user wants a kitchen sink full of features that are of questionable value in terms of security. How this program rates only a 4.8 is beyond my diminutive comprehension. Please enlighten me.
user avatar
Mara Lee Higdon
Well the same reviewer gave Norton and McAfee which are known more as malware themselves, top points...
user avatar
Mahdi K Lee Higdon
Thanks for writing your review, it encouraged me to get ClamAV despite the low rating!
Nyle
Nyle
United States
4.0
ClamAV is ok if you have no money for a good solution
Windows User
ClamAV is historically known for a large number of false positives and negatives. In other word when tested against other solutions, it does a horrible job detecting malware/viruses. I would not rely on it for any critical operations. Is it better than nothing? Well probably based on that criteria alone.
user avatar
AMD_Freakzoid Nyle
Doesn't Windows have its own security system--something which MS begrudgingly integrated so many years ago? That's far more appropriate.

Sure, ClamAV/Clamtk can't know everything about Windows--that would require Microsoft's k...Show More
user avatar
DatBoi AMD_Freakzoid
How does pointing a finger at Microsoft detract in any way from what this person commented? Stay on topic maybe?
user avatar
AMD_Freakzoid DatBoi
I'm just saying that Clamtk isn't really intended to scan windows partitions.
Ghost man
Ghost man
Germany
8.0
Clamav Surprised Me
Linux User
Just for the record, I'm a completely random person,and I don't work for any company related to ClamAV.

ClamAV surprised me after I performed a scan yesterday over my entire system and it found some viruses that even BitDefender didn't detect earlier.

For an open source solution, it is definitely a big thing to actually detect and remove effectively infected files.

I have a sense for fake Anti-virus software but ClamAV didn't give me this impression since there are no pay walls and subscription requests like the other scam software I used in the past "For free".

I didn't give ClamAV 10/10 because I still feel that there are few things to be improved like logging but it's forgivable because they even got a UI that you could insta...Show More
CJ
CJ
United Kingdom
9.0
This reviewer knows absolutely nothing about this industry!
Mac User
UNBELIEVABLE! > "ClamAV is not very good, even as a free antivirus."

ClamXAV has some of the best detection rates from any macOS antivirus! - Perfect scores on AV-TEST
Most IT Professionals use ClamXAV for a reason!
Its inexpensive!
Its extremely low on system resources!

it doesn't include tons of junk! (Ad blockers/VPN/Password Manager/Wifi protection/System cleaner etc)

If you want your Antivirus to be just an Antivirus - ClamXAV is an EXCELLENT choice!
Daniel
Daniel
Germany
10.0
Very good Antivirus
Windows User
Very good Antivirus! it is simple, however I scanned more than 100k files in less than 30 minutes, while using Skype and installing and update.
Good antivirus
Windows User
Very good antivirus for linux with fairly good detection rate and clamav has the important features for linux such as real time scanning although it is hard to configure it.
Pakistan
10.0
Wonderful Antivirus
Windows User
ClamAV, unlike about 90% of the BS out there like Avira, isn't at all packed to the brim with pointless bloatware and isn't intrusive either.
DavidJ
DavidJ
United States
7.0
Easy to use with GUI interface
Linux User
I initially wouldn't try ClamAV because it was only Command Line Interface. But then I saw Clamtk in Linux Mint's Software Manager, which is a Graphical User Interface front-end for ClamAV. Installed and launched it, and scanned my Downloads, which were all clean.

While this does not include behavior-based protection, or email protection, at least it is plain old virus protection, which is better than nothing. And free