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Bitdefender Antivirus Free

Developed by - Windows, Other - setup file Antivirus_Free_Edition.exe (158.41 KB) - Freeware
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MD5: de1f74c3471f2c9a8c0b3969e692f7b2

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Review & Alternatives

"World's most lightweight antivirus"

Winner Best software in 2014 - Antivirus.


For people looking for a feather light virus protection software that has virtually zero impact on system resources, look no further than the BitDefender Antivirus Free Version. This BitDefender software runs quietly in the background and offers award winning protection that's second to none. Rated as a 5 star program at multiple software depots, you can be sure that you're getting top of the line protection that's totally free to use and enjoy. 

The BitDefender company has been officially recognized internationally as having the ability to block Internet threats that other programs might miss. Their cloud scanning technology stays aware with up to the second updates on new and emerging virus threats. With BitDefender Antivirus Free Edition you get blazing fast performance along with all the latest virus definition updates available. 


The installation of BitDefender Antivirus Free Edition takes just seconds. The download file is so small that there's virtually zero impact on system resources, even when scanning. This software prompts you to create a free MyBitDefender account so you can register with the company and get email updates. 

This software is compatible with Windows XP, Windows Vista, Windows 7, and Windows 8. You should also have at least 512 megabytes of RAM, and at least 700 megabytes of hard drive space to complete the install. 

Also, there's no adware/spyware bundled with the program to get in the way of your computing experience.


The interface of Bitdefender Antivirus is totally straight forward and offers a "no-frills" user experience. The Real Time shield and Active Virus Control provides real time protection without forcing you to run scans that take up precious time. All scanning is done in the background without you needing to lift a finger. This software also comes with an Intrusion Detection System that bans offending programs from running in the background. Additionally, the B-Have system offers a proactive line of defense against malicious programs that other software might miss.

Early Boot Scanning, Anti-Root Kit, and HTTP Scanning are all part of this program too, and you get it totally free with the Bitdefender Antivirus Free Edition.  


The bulk of this program only takes up a few kilobytes of hard disk space. It installs very fast and runs super fast too. This programs claim to fame is the fact that it's super light and doesn't affect system resources in any way. It can scan your computer when it boots up and is full of security measures that help to keep you safe. You might consider running this program in unison with other antivirus programs for additional protection. 

The Early Boot Scanning, Anti-Root Kit, and HTTP Scanning features, along with the Active Virus and Real Time Shield protection makes this an intelligent program that can really save you if you happen to encounter a virus or other malicious program. 


  • Lack Of Available Options To Configure - No Full System Scan Available - You Must Rely On The Active Background Protection Only
  • No Included Email Scanning Available


ZenOKAntivirus - This is a totally free program that scans your computer for viruses, provides anti-spyware / anti-adware protection, and even protects you against online banking trojans. Best of all, like the Bitdefender Antivirus Free Edition, it uses very little system resources. ZenOKAntivirus is another example of a lightweight Internet security program that's both free and fast, updated regularly, and ready for action. 

ESET Antivirus - Although it costs money for the full version, ESET Antivirus is an all-in-one security solution that's both lightweight and full featured. You get phishing protection, anti-theft, antivirus, firewall, parental controls, social media scanning, and security training, all in a convenient and easy to use package. This software package is also very light on system resources, which everyone will be sure to appreciate. 


The Bitdefender Antivirus Free Edition is a program that will run on nearly any machine, regardless of how fast a PC you have. The active protection is suitable for both online and offline people, and there's no annoying full system scans to take up precious time. This is an award winning program that's highly touted by the Internet security community, and you get to take advantage of the protection it offers free of charge. You'll notice that when this program is running, there's very little system resource usage involved. The virus definitions for this program are updated all the time, and the Bitdefender company is at the top of its game as far as Internet security is concerned.

Winner Best software in 2014 - Antivirus.

Reviewed by Sam Kenwick

Requirements: CPU: 800MHz processor, 1 GB, 2GB (Microsoft Windows 8), 1 GHz or higher processor, 512 MB of RAM

What's new in this version: Product now works with Comodo Firewall, Option to add exceptions to detected items now available, Threat Control area created to display both quarantined items and exceptions applied by the user, Option to bypass detected webpages at users own risk, Ignored items section now displayed separately for password-protected archives, Quicksweep flow enhanced for maximum protection, New actions added to the security flow when suspect items are found during scan.

Antivirus information

Download3K has downloaded and tested Bitdefender Antivirus Free on 6 Sep 2013 with some of Today's best antivirus engines and you can find below, for your convenience, the scan results:
  • Avast:

  • Avira:

  • Kaspersky:

  • NOD32:

Bitdefender Antivirus Free Antivirus Report
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4/5 (1 votes)
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