Software comparison
Best Antivirus & Endpoint Security for Small Business
'Antivirus' has quietly become 'endpoint security' - modern tools combine prevention, detection, and response rather than just signature scanning. The real decision for a small business is how much in-house IT expertise you have to actually run one of these, not just which has the best detection scores.
Independent research · Verify current pricing with each provider
Pricing reality
Per-device pricing varies enormously by tier in this category - from budget SMB plans to premium enterprise pricing that requires a sales call. Confirm which tier you're actually looking at before comparing numbers across vendors.
At a glance
Which one fits?
Best for: Small businesses wanting strong detection without enterprise pricing or complexity
Free: No free tier for business plans.
Best for: Businesses already on Microsoft 365 Business Premium or E5
Free: Included at no extra cost if you're already on a qualifying Microsoft 365 tier - otherwise a separate paid add-on.
Best for: Very small teams (under ~20 devices) with no dedicated IT person
Free: No free tier.
Best for: Growing businesses with a real IT/security function and higher risk exposure
Free: No free tier - quote-based, with some published entry pricing for smaller deployments.
Detailed review
What to know before you choose.
Bitdefender GravityZone
Best for Small businesses wanting strong detection without enterprise pricing or complexity
Free plan and limits
No free tier for business plans.
The Trade-off
Independent malware-testing results can help put detection performance in context, but they should not be treated as a permanent ranking. Compare the latest test methodology, coverage and current pricing before calling it the best value. The management console has more of a learning curve than Norton's consumer-simple setup.
Microsoft Defender for Endpoint
Best for Businesses already on Microsoft 365 Business Premium or E5
Free plan and limits
Included at no extra cost if you're already on a qualifying Microsoft 365 tier - otherwise a separate paid add-on.
The Trade-off
If you're already paying for the right Microsoft 365 tier, this is effectively already included - genuinely hard to justify paying for a separate product on top of that. Standalone (outside a qualifying Microsoft 365 plan), it's a less compelling value than Bitdefender.
Norton Small Business
Best for Very small teams (under ~20 devices) with no dedicated IT person
Free plan and limits
No free tier.
The Trade-off
Its cloud-managed approach can be a practical fit for a small team without dedicated security staff. The trade-off is less depth for advanced threat hunting and response than dedicated security platforms. Advanced threat-hunting and response depth trail the dedicated business platforms above it, which is an acceptable trade at this scale.
CrowdStrike Falcon
Best for Growing businesses with a real IT/security function and higher risk exposure
Free plan and limits
No free tier - quote-based, with some published entry pricing for smaller deployments.
The Trade-off
Its threat-intelligence and detection capabilities are aimed at organizations with more mature security operations. If security is business-critical, compare its current independent test results, response features and total licensing cost against your requirements. Pricing is modular and accumulates, and it assumes a level of security operations maturity most very small businesses haven't reached yet.
StackPick verdict
The bottom line.
No dedicated IT person, small team? Norton Small Business - simplicity matters more than marginal detection gains at this scale. Already on the right Microsoft 365 tier? Check what Defender for Endpoint already includes before buying anything else. Want the best detection-per-dollar without enterprise complexity? Bitdefender GravityZone. Real security function and higher risk exposure (handling sensitive data, regulated industry)? CrowdStrike is worth the premium and the complexity.
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