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Cybersecurity · head to head

CrowdStrike Falcon vs Tenable Nessus

CrowdStrike Falcon logo

CrowdStrike Falcon

Cybersecurity

Stop breaches with AI-native cybersecurity

From
Free
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CrowdStrike Falcon falcon Go device limit: capped at 100 devices maximum, forcing mid-market/enterprise customers to upgrade despite lower cost; Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • They diverge on capability: CrowdStrike Falcon covers Next-gen antivirus, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 2 September 2026.

Where they differ

Only the attributes on which CrowdStrike Falcon and Tenable Nessus actually diverge.

Attributes where CrowdStrike Falcon and Tenable Nessus differ
AttributeCrowdStrike FalconTenable Nessus
PlatformsWindows, macOS, LinuxWindows, Linux, Macos, Cloud
Founded20112002

Identical on both: starting price (Free), pricing model (subscription), free tier (Yes), user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in CrowdStrike Falcon

  • Next-gen antivirus
  • Endpoint detection and response
  • Threat intelligence
  • IT hygiene
  • USB device control
  • Firewall management
  • Threat graph
  • Real-time response

Only in Tenable Nessus

  • Network scanning
  • Vulnerability detection
  • Configuration assessment
  • Malware detection
  • Compliance checking
  • Cloud security assessment
  • Mobile scanning
  • API access

Both cover

  • Splunk
  • ServiceNow
  • AWS
  • Azure
  • Google Cloud
  • SOC2 Type 2

What people use each for

The jobs each tool is most often brought in to do.

CrowdStrike Falcon

  • Endpoint detection and response for enterprise cybersecuritynot Tenable Nessus
  • Malware prevention and threat huntingnot Tenable Nessus
  • Managed detection and response (MDR) servicesnot Tenable Nessus

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot CrowdStrike Falcon
  • Configuration and compliance auditing against hardening benchmarksnot CrowdStrike Falcon
  • Point in time assessments by consultants and penetration testersnot CrowdStrike Falcon

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

CrowdStrike Falcon

  • Falcon Go device limit: capped at 100 devices maximum, forcing mid-market/enterprise customers to upgrade despite lower cost
  • EDR locked behind Enterprise tier: endpoint detection and response available only at $19.99/device/month tier; not available in Pro
  • Managed service pricing opaque: Falcon Complete Next-Gen MDR requires contacting sales; no pricing range for 24/7 MDR services published
  • Annual discount modest: 17-24% savings on annual vs. monthly create minimal incentive to prepay

Tenable Nessus

  • Nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Support beyond the base entitlement costs an extra $400 per year for Advanced Support with 24x365 phone and chat access
  • The on demand training course is a separate $275 purchase for a single person for one year
  • Multi year discounts require paying for two or three years up front

Pricing, plan by plan

CrowdStrike Falcon

Free
  • Falcon Go$undefined/mo
  • Falcon Pro$undefined/mo
  • Falcon Enterprise$undefined/mo
  • Falcon Complete Next-Gen MDR$undefined/mo

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2600/year
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5200/year
    • All Professional features
    • Cloud integration
    • Advanced reporting

Which should you pick?

Choose CrowdStrike Falcon if

  • You need next-gen antivirus.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want endpoint detection and response.
CrowdStrike Falcon review

Choose Tenable Nessus if

  • You need network scanning.
  • You want to start without paying.
  • You work on Windows, Linux, Macos, Cloud.
  • You also want vulnerability detection.
Tenable Nessus review

Questions people ask

Is CrowdStrike Falcon or Tenable Nessus better?
Neither clearly leads. CrowdStrike Falcon starts at Free and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CrowdStrike Falcon or Tenable Nessus?
CrowdStrike Falcon starts at Free and Tenable Nessus at Free.
Does CrowdStrike Falcon or Tenable Nessus run on more platforms?
CrowdStrike Falcon runs on Windows, macOS, Linux. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use CrowdStrike Falcon for free?
Both have a free tier, so you can try either at no cost before committing.
What is CrowdStrike Falcon best used for?
CrowdStrike Falcon is most often used for endpoint detection and response for enterprise cybersecurity, malware prevention and threat hunting, managed detection and response (mdr) services. Of those, endpoint detection and response for enterprise cybersecurity and malware prevention and threat hunting are not what Tenable Nessus is typically brought in for.
What can CrowdStrike Falcon do that Tenable Nessus cannot?
CrowdStrike Falcon covers Next-gen antivirus, Endpoint detection and response, Threat intelligence, IT hygiene. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. Both handle Splunk, ServiceNow, AWS, Azure.

Answered from the vendors’ own pages

CrowdStrike Falcon: How much does CrowdStrike Falcon cost per device?

Falcon Go costs $7.99/device/month ($59.99/year), Falcon Pro costs $14.99/device/month ($99.99/year), and Falcon Enterprise costs $19.99/device/month ($184.99/year).

Source
Tenable Nessus: What are the three Nessus offerings?

Nessus Essentials is a free introductory offering for educators, students, and career starters, limited to 16 IPs for scanning. Nessus Professional is designed for consultants and SMBs, providing unlimited IT scans across any location. Nessus Expert is the premium offering extending Professional with web application scanning, infrastructure-as-code scanning, and external attack surface assessment up to 5 domains.

Source
CrowdStrike Falcon: What is the device limit for Falcon Go?

Falcon Go is limited to a maximum of 100 devices. Organizations with more than 100 devices must upgrade to Pro or Enterprise tiers.

Source
Tenable Nessus: What OS platforms does Nessus support?

Nessus runs on Debian/Kali Linux, Fedora, FreeBSD, Mac OS X, Red Hat/CentOS, SUSE Linux, Ubuntu, and various Windows versions including Server 2008, 2012, and Windows 7-10.

Source
CrowdStrike Falcon: What is the difference between Falcon Pro and Enterprise?

Falcon Pro ($14.99/device/month) includes firewall management and advanced device control. Falcon Enterprise ($19.99/device/month) adds endpoint detection and response (EDR), threat hunting services, and expert threat intelligence.

Source
Tenable Nessus: Can I use Nessus to scan third-party networks as a consultant?

Yes, Tenable permits you to use Nessus to scan third-party networks. Nessus Professional is ideal for consultants.

Source
CrowdStrike Falcon: How much does the managed detection and response service cost?

Falcon Complete Next-Gen MDR pricing is custom. It provides 24/7 expert-led detection and response with AI acceleration and continuous investigations by expert threat teams. Contact CrowdStrike sales for a quote.

Source
Tenable Nessus: Can Nessus perform PCI external scanning?

Yes, you can use Nessus Professional to perform external network scans as required by the PCI DSS 11.2.2 requirement.

Source
Tenable Nessus: What additional features does Nessus Expert provide?

Web application scanning, which is dynamic application security testing (DAST) providing comprehensive visibility and insight into web application security issues; scanning code repositories for vulnerabilities; and assessing external attack surface with subdomain discovery.

Source
Tenable Nessus: What support options exist for Nessus Professional?

Standard Support includes software upgrades, patches, plugin access, and 24x7 support via chat and community portal. Advanced Support adds 24x7 phone access and committed SLAs: P1 less than 2 hours, P2 less than 4 hours, P3 less than 12 hours, P4 less than 24 hours.

Source
Tenable Nessus: How frequently are Nessus plugins updated?

Nessus plugins are updated daily, based on when vendors and security research sites publish new vulnerabilities.

Source
Tenable Nessus: How does licensing work in virtual machine environments?

Whether you are using Nessus in a physical or a virtual environment, the IP addresses or hosts that you are scanning from must be licensed.

Source
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