7 Best Antivirus Apps for Windows and Mac

Antivirus software should help you avoid trouble without turning your computer into a billboard. For most people, the right choice is either the protection already built into Windows or one straightforward paid security app.

Macs benefit from thoughtful protection, too, especially when you download unfamiliar software or share files widely. These seven options cover different needs without assuming that a bigger bundle automatically makes you safer.

Quick picks

• Best free Windows starting point: Microsoft Defender Antivirus — built into Windows and easy to maintain.
• Best cross-platform shortlist: Bitdefender — established Windows and Mac protection options.
• Best for simple paid protection: ESET — a focused alternative to sprawling bundles.
• Best for occasional second opinions: Malwarebytes — useful scanning alongside sensible everyday precautions.

How we picked

These are practical recommendations based on established product roles and everyday usability, not a claim that one vendor wins every independent test. Check current operating-system requirements, regional availability, and recent independent evaluations before buying.

• Protection first: Prioritize malware defenses rather than unrelated extras or alarming sales messages.
• Platform clarity: A Windows subscription does not guarantee identical Mac features.
• Manageable cost: Compare renewal pricing, device allowances, and cancellation terms, not just introductory offers.
• Low friction: Alerts should explain what happened and what you need to do next.
• Honest limits: No antivirus can reliably stop you from voluntarily sending money to a convincing scammer.

Start with straightforward protection

1. Microsoft Defender Antivirus

Microsoft Defender Antivirus is the built-in malware protection included with Windows Security on supported Windows PCs. It is a sensible free baseline if you keep Windows updated, leave real-time protection enabled, and avoid questionable downloads. Its biggest advantage is convenience: there is no separate antivirus subscription to maintain. The downside is that it is not an equivalent free antivirus package for macOS. Microsoft's separately branded Defender apps and subscription features can also make comparisons confusing, so check which product a review describes.

Best for: Windows users who want reliable baseline protection without another bill.

2. Bitdefender

Bitdefender offers security products for Windows and Mac, making it a useful shortlist choice when your household uses both. Its range lets you choose basic protection or a broader paid bundle, depending on the market. The drawback is that similarly named plans can include different features and device limits, while optional extras may complicate checkout. Treat it as a paid option unless the specific edition you want clearly says otherwise, and compare the renewal cost before committing.

Best for: Households comparing established cross-platform paid protection.

3. ESET

ESET makes paid security software for Windows and Mac, with packages aimed at people who prefer a relatively focused security experience. It is worth considering if you want clear device protection rather than choosing mainly for bundled identity or storage services. The trade-off is that features vary across platforms and subscription levels, so a Windows feature list may not describe the Mac app. Check the supported operating systems and trial terms on the regional store before paying.

Best for: People who want a focused paid security suite.

Consider bundles with care

4. Norton

Norton offers antivirus within broader paid security packages, including options for households with multiple devices. It can make sense when you genuinely want several included services and would otherwise buy them separately. The downside is complexity: backup, VPN, monitoring, and other benefits depend on your plan, location, and operating system. Introductory discounts can also obscure the ongoing cost. Compare the exact renewal amount and avoid counting a bundled feature as savings unless you will actually use it.

Best for: Families who want to manage several security services together.

5. McAfee

McAfee sells consumer security subscriptions that can cover Windows and Mac computers, with broader privacy and identity features in some packages. It deserves a look if managing a household subscription matters more to you than finding the smallest possible antivirus app. Its downside is that eligibility, device allowances, and added services require careful reading. This is generally a paid-suite decision, so compare the current terms and renewal pricing, and remove any unwanted preinstalled trial before choosing your long-term setup.

Best for: Households that value centralized subscription management.

Match the app to your workflow

6. Malwarebytes

Malwarebytes provides malware scanning and paid real-time protection options for Windows and Mac. Its scanning role makes it useful when you want another opinion about a suspicious download or an unexpectedly behaving computer. The important limitation is that an on-demand scanner is not the same as always-on protection; availability and free-tier behavior can change. Read the edition description carefully, decline extras you do not need, and do not assume that installing two real-time scanners doubles your safety.

Best for: People who want accessible scanning and optional ongoing protection.

7. Intego

Intego is particularly worth considering for its Mac-focused security software. That focus can make the product easier to evaluate if your main concern is a Mac rather than a mixed-device household. It offers paid packages, and included utilities vary, so distinguish malware protection from cleanup or backup extras. The downside is that a Mac-oriented purchase may not be the most convenient fit for every computer you own. Check current macOS compatibility and renewal terms before choosing a bundle.

Best for: Mac owners who prefer a Mac-centered security option.

How to choose

Start with your operating system, then decide whether you need anything beyond malware protection. On Windows, open Settings > Privacy & security > Windows Security to review protection status. On a Mac, keep macOS and its built-in security updates enabled even if you install another app.

Choose one primary real-time antivirus. Multiple active engines can cause conflicts, slowdowns, or confusing alerts. A separate on-demand scan may be useful, but follow both vendors' compatibility guidance. Schedule scans for a convenient time and let legitimate updates install automatically.

Antivirus also cannot replace strong logins. Use the Password & Hash Generator to create a unique password, then save it in a trusted password manager. For account protection beyond malware, compare the best authenticator apps.

Before paying, inspect the cancellation process and renewal total. Avoid buying through a warning pop-up or a caller claiming your computer is infected; those tactics often appear in tech support scams.

Keep your setup boring

The best antivirus is one you keep enabled, updated, and understandable. Pick a suitable option, remove competing trials, and review alerts calmly. Good backups, updated software, and cautious clicking still do work that no security subscription can do for you.