NANO Antivirus: Light-weight, fast, free antivirus software for Windows

NANO antivirus is just like many other free antivirus programs available for the Windows OS. They offer features that compete with paid version of antivirus programs that are available in market. NANO antivirus program is a new offering that uses advanced technologies to scan virus, malware, ransomware and other threats that can damage Windows OS files and programs installed.

NANO Antivirus features

NANO Antivirus

NANO offers a UI with all required functionality easily accessible. It is designed for beginners as well as IT specialists – who can use some of its advanced features to protect the system. In the basic UI mode, there is not much to play around with, but in the Advanced UI mode, users can perform various task and can tweak antivirus program the way they want.

This antivirus uses deep scan techniques and also checks for encrypted and polymorphous viruses using the decompression feature that looks  for packed and archived threat residing anywhere in the OS. It also offers features like complete & express system scan, removable media scan, option to quarantine, system guard, etc.

This free antivirus software offers real-time system protection and scans a file every time it is accessed. Its web-traffic scanner checks all files which are downloaded from the Internet. There is also a setting called Trusted Area, where a user can add objects for safe keeping. These objects will be exempted from scan.

The program also offers an option to run the program under a different user account. This feature can be pretty helpful to system administrators who want to scan only other user account files.

Some features in NANO antivirus:

  • A new command-line interface has been added that will help user to perform required task when needed.
  • NANO antivirus got a facelift in the newest release which will make UI much easier to navigate through.
  • NANO antivirus comes with online and offline downloader. Online or light installer will only download the basic setup file to download the complete antivirus pack. In case of offline downloader, the installer will be download the complete antivirus suite which can then be installed in one go.
  • New enhanced mechanism to detect, block and delete malicious and fishing links
  • NANO antivirus can now scan libraries on Windows running Windows 7 and higher.

Nano Antivirus free download

NANO antivirus is a freeware and currently available as a beta version. Users can download the online or offline installer for the product from official website here. Its offline installer is 420MB.

The company also offers a free NANO Antivirus Sky Scan Windows Store app for Windows 8.1. We will cover it in the next few days.

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Abhishek Shukla is a computer graduate by education, a complete tech freak and music addict. Playing with software and mobile phones are part of his hobby. He is currently employed with a multinational company in India.


  1. Matt_Sweeney

    Isn’t a little irresponsible to write a “review” about an antivirus program whose effectiveness you’ve never tested?

  2. Ziggy

    For a very basic a/v it has one mighty BIG installer at 420 mb! Way too big for my liking. And, where are the comparatives with other a/v’s? Would like to know how it compares, for example, with MSE.

  3. disqus

    And why should I trust the security of my system to a BETA product ??

  4. You can use NANO for testing purpose, run it on your computer few days if it meets your requirement then wait for the final build of NANO to launch.

  5. NANO offers many in-depth features that you will not find in MSE, like boot sector scan, easy to use UI, uses deep scanning technique which is certainly missing in MSE.

  6. Hi Matt, We are still testing program efficiency. Will publish the detail review about the same very soon, please stay tuned to TheWindowsClub for updates, cheers !

  7. Ziggy

    Thanks for your reply, Abhishek. Much appreciated…

  8. FD

    It is worth reading the review on BleepingComputer and doing some independent research before downloading this program:
    “Nano Antivirus is a rogue from the same family as AntiSpyware
    Pro XP. This program is classified as a rogue because it uses false scan
    results and deceptive advertising in order to trick you into thinking you are

  9. Thanks for the heads up and the link.

    This software is avilable for download on Majorgeeks, Softpedia as well as CNET.

    An app of This NANO AV is also available on the Windows Store.

    This one is a new one and still in Beta stage, whereas the BleepingComputers review is dated 2008, so I am thinking maybe they are different.

  10. jorge correa

    This antivirus is HUGE…. 420 mb… Why is it so large. I haven’t seen any reviews on this software as of yet so it will be difficult for me to trust an unknown antivirus to protect my computer.

  11. Hello guys,

    Thank you for the review. I’d like to clarify some matters. As for “fake av”, of course we are not. There even is a very old article on our site about that fake av, unfortunately in Russian only .

    As for the size of our offline installer, it is big because it contains all our virus base. So you don’t need to download it after the installation. Anyway we are optimizing it permanently to prevent further growth of installer size.

    Also a few words about beta status. Our product is completely ready. But we are going to release it as soon as we release all necessary services for our future users (7*24 tech-support etc.).

    If you are interested to know more, please visit out forum .

    Thank you!

  12. Warren Taylor

    Nano means small; 420 MB is not small.

  13. admin

    NANO Antivirus is a quite interesting new antivirus program. It is not known widely yet but I’m sure it has a great potential. I use it and appreciate so much because I can use the very good program free. Good luck to developers and thank you!

  14. Ed

    Actually it has been around for quite some time now and has been in beta nearly forever.

  15. admin

    And what is the problem? Beta or not beta, no matter if the product is quality. My experience with NANO Antivirus is definitely positive.

  16. admin

    And what is the problem? Beta or not beta, no matter if the product is quality. My experience with NANO Antivirus is definitely positive.

  17. Donny77

    I use it almost 1 year. It has very good detection rate and clear interface. A small drawback is that the first update is quite slow.

  18. NANO Antivirus

    NANO AntiVirus Pro was one of the most prestigious awards in the antivirus industry!

    VB100 test laboratory – one of the oldest reputable independent laboratories conducting testing of antivirus products.

    During the test confirmed 100% detection of malware samples, as well as the absence of false positives. This
    has allowed our product NANO AntiVirus Pro to receive VB100 badge,
    confirming the high quality and reliability of the product. Also assessed the stability of the product and its impact on the
    operating system, in these tests, our product has also shown good

    by a testing team VB100: «NANO Antivirus Pro impressed in the last few
    tests steady tendency to improve in all areas, and this month he again
    showed his best side. Stability was flawless on the system impact is quite acceptable. Detection of malware samples is quite high, including a perfect DETECTIVE the Wildlist samples, no problems with false alarms. “

  19. Niko Pirosmani

    I’ve just installed the free version and checked Nano on AMTSO website. It passed all tests, including the anti-phishing test. The only thing you have to do is to open compressed files for reliable treat detection, but everything else works flawlessly. They have made significant improvements since my last check-up.

  20. hmmnano

    If your db is that big and if you load your db on ram, your av isnt light at all!

    Why is your db that big anyway? Just hash blacklist? Your engine doesnt use gen/heur? If your av does use cloud or behavior tech, the db wouldnt be that big!

    Do you even update your engine to reduce your db size? Engine is simple hash scanner?

    Perhaps db is full of blacklisted sites? Lol. Do the checking by web guard remotely!

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