Malwarebytes Alternatives in 2026: 6 Honest Options Compared
Malwarebytes is a well-known name in anti-malware, especially for its on-demand scanner that’s often used to clean an already-infected PC. But it isn’t the only good option, and depending on your needs — free vs. paid, on-demand cleanup vs. always-on protection — a different tool may suit you better. This is an honest comparison of real, widely available alternatives.
A note on honesty: we don’t publish made-up benchmark percentages or “our lab” test scores. For independent detection testing, the trustworthy public sources are AV-TEST and AV-Comparatives, which run reproducible methodology you can read yourself. Use them to check current results rather than trusting any single site’s numbers.
Why look for an alternative?
Common reasons people search for a Malwarebytes alternative:
- They want a completely free on-demand scanner.
- They want a single product that’s always-on antivirus, not just a cleanup tool.
- They already have antivirus and want a second-opinion scanner that won’t conflict.
- They’re on a budget and want to know what the built-in option offers.
The alternatives
1. Microsoft Defender (built into Windows)
If you’re on Windows 10 or 11, you already have Microsoft Defender — a full real-time antivirus with firewall integration, ransomware protection (Controlled Folder Access), and SmartScreen web filtering, at no cost. For many users it’s a perfectly reasonable primary antivirus. It’s the natural baseline to compare everything else against.
2. Bitdefender
Bitdefender is a long-established security vendor whose products regularly appear in AV-TEST and AV-Comparatives evaluations. It offers a free tier with core real-time protection and paid suites adding ransomware remediation, web protection, and a VPN. It’s a strong choice if you want an always-on, set-and-forget antivirus rather than a manual cleanup tool.
3. Kaspersky
Kaspersky has a strong technical reputation and consistently participates in independent lab testing. Note one non-technical caveat: in 2024 the U.S. government restricted the sale of Kaspersky software in the United States, so U.S. users may be unable to buy or update it. Outside that context it remains a capable engine — check availability in your country.
4. ESET
ESET (NOD32 / ESET HOME Security) is known for a light footprint, which makes it popular on older or lower-spec PCs. It’s a paid product focused on always-on protection with relatively low system impact, and it appears regularly in independent testing.
5. Avast / AVG
Avast and AVG (now the same company) both offer well-known free antivirus tiers with real-time protection — a closer match to “free always-on antivirus” than Malwarebytes’ free mode, which is on-demand only. A reasonable privacy note: read the data/telemetry settings during install and opt out of anything you’re not comfortable with.
6. ADWCleaner (also by Malwarebytes) and other on-demand scanners
If what you actually want is just a free cleanup tool for adware, browser hijackers, and PUPs, ADWCleaner is a free targeted remover. Other on-demand second-opinion scanners exist too. These don’t replace an always-on antivirus, but they’re excellent at the specific job of cleaning junk a primary AV missed.
Quick comparison
| Tool | Type | Free option | Best for |
|---|---|---|---|
| Microsoft Defender | Always-on AV | Built into Windows | A solid no-cost primary AV |
| Bitdefender | Always-on AV | Free tier | Set-and-forget protection |
| Kaspersky | Always-on AV | Free tier | Strong engine (check regional availability) |
| ESET | Always-on AV | Trial only | Older / low-spec PCs |
| Avast / AVG | Always-on AV | Free tier | Free real-time protection |
| ADWCleaner | On-demand cleaner | Yes | Adware / PUP cleanup |
How to choose
- Want free, always-on protection? Microsoft Defender (built in), or Avast/AVG/Bitdefender free tiers.
- Want the lightest impact on an old PC? ESET is known for that.
- Just cleaning an infection right now? A free on-demand scanner like ADWCleaner is the closest match to how many people use Malwarebytes.
- Want a full paid suite with VPN/ransomware tools? Bitdefender’s paid tiers are a common pick.
Don’t run two full real-time antivirus engines at once — they fight each other. The safe pattern is one always-on AV (Defender is fine) plus an on-demand second-opinion scanner that you run only when you suspect something.
After a cleanup: secure your accounts
Whichever tool you use, if a PC was infected — especially by spyware or an info-stealer — assume saved passwords were exposed. Change them from a clean device.
FAQ
Is Malwarebytes’ free version an antivirus? The free version is an on-demand scanner — you run it manually. It isn’t always-on real-time protection, which is why a free always-on AV like Defender is a different category.
What’s the best free Malwarebytes alternative? For built-in always-on protection, Microsoft Defender. For a free targeted cleaner, ADWCleaner. The “best” depends on whether you want real-time defense or manual cleanup.
Where can I see real detection test results? AV-TEST and AV-Comparatives publish independent, reproducible results. Check current scores there instead of relying on any single review’s claims.