Bitdefender Antivirus Free vs ClamAV
Both are free antivirus & security tools. Here is how they actually differ.
Bitdefender Antivirus Free and ClamAV at a glance
| Feature | Bitdefender Antivirus Free | ClamAV |
|---|---|---|
| Developer | Bitdefender | Cisco Talos |
| Licence | Free tier | Open Source |
| Cost | Free tier | Free |
| Windows | Yes | Yes |
| macOS | No | Yes |
| Linux | No | Yes |
| Mobile | No | No |
| Source code | Closed | Public |
Bitdefender Antivirus Free: what it's good at
Bitdefender Antivirus Free pairs the detection engine that consistently scores at the top of independent AV comparison tests with a deliberately minimal interface. It is designed to install and then stay out of your way, making it a good fit for machines you maintain for other people.
- Highly rated detection engine
- Very low system impact
- Almost no configuration required
- Real-time threat defence
ClamAV: what it's good at
ClamAV is an open-source antivirus engine widely deployed for scanning mail gateways, file servers and uploads. It is command-line and integration oriented rather than a consumer desktop suite, which makes it the natural pick for scripted or server-side scanning.
- Fully open source
- Designed for mail and file server scanning
- Scriptable command-line interface
- Frequent signature database updates
Which should you choose?
Both are free, so the honest answer is that you can install either and decide for yourself — that is the advantage of free software over a paid trial.
Both run on Windows. Only ClamAV supports macOS, Linux. If open source matters to you, ClamAV publishes its source code and Bitdefender Antivirus Free does not.
We deliberately do not publish a star rating for either. We have no way to verify a rating that would be honest at scale, and an invented one would be worse than none — so we give you the facts and let you decide.
Frequently asked questions
Is Bitdefender Antivirus Free better than ClamAV?
Neither is universally better. Bitdefender Antivirus Free minimal-configuration antivirus with a top-rated engine, while ClamAV open-source antivirus engine, standard on mail servers. The right pick depends on your platform and workflow.
Are both really free?
Bitdefender Antivirus Free is free tier and ClamAV is open source. Both can be downloaded without paying.
Can I install both?
Yes. Since neither costs anything, installing both and comparing them on your own files is usually the fastest way to decide.