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APIs · head to head

3scale vs Tenable Nessus

3scale logo

3scale

APIs

API management platform for designing, securing, and monetizing APIs

From
$300/monthly
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tenable Nessus has a free tier, so it costs nothing to try first.
  • Each has a real cost: 3scale red Hat's managed 3scale services end on 30 June 2027, so anyone adopting the hosted option now is choosing a product with a published end date; 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: 3scale covers API Gateway, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which 3scale and Tenable Nessus actually diverge.

Attributes where 3scale and Tenable Nessus differ
Attribute3scaleTenable Nessus
Starting price$300/monthlyFree
Free tierNoYes
PlatformsCloud, On-premises, HybridWindows, Linux, Macos, Cloud
CategoryAPIsCybersecurity
Founded19932002

Identical on both: pricing model (subscription), user rating (Not yet rated).

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 3scale

  • API Gateway
  • Developer Portal
  • API Monetization
  • Red Hat OpenShift
  • Kubernetes
  • Cloud support
  • On-premises support
  • Hybrid support

Only in Tenable Nessus

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

Both cover

  • AWS
  • Azure

What people use each for

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

3scale

  • API gateway and lifecycle managementnot Tenable Nessus
  • Rate limiting and traffic control across API consumersnot Tenable Nessus
  • Developer portal and access key managementnot Tenable Nessus
  • Monetising APIs with usage-based plansnot Tenable Nessus
  • Hybrid deployment across on-premises and cloudnot Tenable Nessus

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot 3scale
  • Configuration and compliance auditing against hardening benchmarksnot 3scale
  • Point in time assessments by consultants and penetration testersnot 3scale

Where each one falls short

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

3scale

  • Red Hat's managed 3scale services end on 30 June 2027, so anyone adopting the hosted option now is choosing a product with a published end date
  • Sold as part of Red Hat middleware rather than standalone, and 3scale.net redirects into redhat.com
  • Pricing is not published and a subscription is required for some services

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

3scale

$300/monthly
  • Starter$300/monthly
    • API gateway
    • Developer portal
    • Basic analytics
  • Professional$750/monthly
    • Advanced features
    • API monetization
    • Enhanced support
  • Enterprise$undefined/monthly
    • Custom deployment
    • Dedicated support
    • Premium SLA

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 3scale if

  • You need api gateway.
  • You work on Cloud, On-premises, Hybrid.
  • You also want developer portal.
3scale 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 3scale or Tenable Nessus better?
Neither clearly leads. 3scale starts at $300/monthly and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, 3scale or Tenable Nessus?
Tenable Nessus has a free tier; the other does not. Paid plans start at $300/monthly for 3scale and Free for Tenable Nessus.
Does 3scale or Tenable Nessus run on more platforms?
3scale runs on Cloud, On-premises, Hybrid. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Tenable Nessus for free?
Yes. Tenable Nessus has a free tier, so you can try it without paying. 3scale starts at $300/monthly.
What is 3scale best used for?
3scale is most often used for api gateway and lifecycle management, rate limiting and traffic control across api consumers, developer portal and access key management, monetising apis with usage-based plans. Of those, api gateway and lifecycle management and rate limiting and traffic control across api consumers are not what Tenable Nessus is typically brought in for.
What can 3scale do that Tenable Nessus cannot?
3scale covers API Gateway, Developer Portal, API Monetization, Red Hat OpenShift. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. Both handle AWS, Azure.

Answered from the vendors’ own pages

3scale: Does Red Hat 3scale require a subscription?

Yes. The page states a subscription may be required for some services, though specific subscription details and costs are not published on this page.

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
3scale: Is a trial available for 3scale?

A 'Start a trial' link is mentioned in navigation, but trial duration, included features, and limitations are not specified on this page.

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
3scale: When will Red Hat 3scale end support?

Red Hat 3scale API Management maintenance and managed services will end on June 30, 2027. Customers should plan migrations accordingly.

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
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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