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Cybersecurity · head to head

Nessus vs Socket

Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Rated
-
Full reviewWebsite
Socket logo

Socket

Cybersecurity

Supply chain security platform detecting and blocking malicious dependencies

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Socket has a free tier, so it costs nothing to try first.
  • Each has a real cost: Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier; Socket team plan requires minimum 5-developer commitment, expensive for small teams
  • They diverge on capability: Nessus covers Vulnerability scanning, Socket covers Automatic blocking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Nessus and Socket actually diverge.

Attributes where Nessus and Socket differ
AttributeNessusSocket
Starting price$4790/yearFree
Pricing modelsubscriptionPer-developer monthly subscription with tiered access
Free tierNoYes
PlatformsDesktop, ApiWeb, CLI, GitHub
Founded20022021

Identical on both: 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 Nessus

  • Vulnerability scanning
  • Configuration auditing
  • Web application scanning
  • Cloud scanning
  • Compliance checks
  • Patch auditing
  • Pre-built policies
  • ServiceNow

Only in Socket

  • Automatic blocking
  • AI behavior analysis
  • Reachability analysis
  • Slack integration
  • SBOM support
  • SAML SSO
  • GitHub Actions scanning

Both cover

  • Malware detection

What people use each for

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

Nessus

  • Vulnerability scanning for individual practitionersnot Socket
  • Enterprise vulnerability managementnot Socket
  • Web application security assessmentsnot Socket

Socket

  • Blocking zero-day malware attacks in JavaScript dependenciesnot Nessus
  • Managing CVE false positives with precomputed reachability analysisnot Nessus
  • Securing Python and Go supply chains at scalenot Nessus
  • Automating compliance requirements for regulated industriesnot Nessus
  • Real-time threat notifications via Slack integrationnot Nessus

Where each one falls short

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

Nessus

  • Nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • Multi year terms are the only discount route, at $9,330.95 for two years and $13,637.54 for three
  • It is a single user scanner, so team workflows mean migrating to another Tenable product
  • Tenable One vulnerability management is priced separately, starting at $3,500 a year for 100 assets

Socket

  • Team plan requires minimum 5-developer commitment, expensive for small teams
  • Business plan $50/dev/month becomes costly for teams exceeding 20 members
  • Enterprise pricing requires custom consultation with no transparent pricing
  • Free plan limited to individual developers without team collaboration
  • Reachability analysis improvement (90% false positive reduction) only on Enterprise

Pricing, plan by plan

Nessus

$4790/year
  • Nessus Professional$4790/year
    • 1 year license
    • Best for individual security professionals
  • Nessus Professional 2-Year$9330.95/2 years
    • 2 year license with discounted rate vs. annual
  • Nessus Professional 3-Year$13637.54/3 years
    • 3 year license with discounted rate vs. annual
  • Nessus Expert$6790/year
    • 1 year license
    • Enhanced capabilities vs. Professional

Socket

Free
  • FreeFree
    • For individual developers
    • Detects 70+ risk types
    • Blocks malicious dependencies automatically
  • Team$25/month
    • Per developer on minimum 5 developers
    • Precomputed reachability analysis cuts 60% false positives
    • Slack alerts for threats
  • Business$50/month
    • Per developer on minimum 20 developers
    • All Team features
    • Compliance integrations with Vanta
  • Enterprise$undefined/custom
    • Function-level reachability eliminates up to 90% irrelevant CVEs
    • Multi-repository system support
    • Named account manager

Which should you pick?

Choose Nessus if

  • You need vulnerability scanning.
  • You work on Desktop, Api.
  • You also want configuration auditing.
Nessus review

Choose Socket if

  • You need automatic blocking.
  • You want to start without paying.
  • You work on Web, CLI, GitHub.
  • You also want ai behavior analysis.
Socket review

Questions people ask

Is Nessus or Socket better?
Neither clearly leads. Nessus starts at $4790/year and Socket at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Nessus or Socket?
Socket has a free tier; the other does not. Paid plans start at $4790/year for Nessus and Free for Socket.
Does Nessus or Socket run on more platforms?
Nessus runs on Desktop, Api. Socket runs on Web, CLI, GitHub.
Can I use Socket for free?
Yes. Socket has a free tier, so you can try it without paying. Nessus starts at $4790/year.
What is Nessus best used for?
Nessus is most often used for vulnerability scanning for individual practitioners, enterprise vulnerability management, web application security assessments. Of those, vulnerability scanning for individual practitioners and enterprise vulnerability management are not what Socket is typically brought in for.
What can Nessus do that Socket cannot?
Nessus covers Vulnerability scanning, Configuration auditing, Web application scanning, Cloud scanning. Socket covers Automatic blocking, AI behavior analysis, Reachability analysis, Slack integration. Both handle Malware detection.

Answered from the vendors’ own pages

Nessus: What is the cheapest Nessus option?

Nessus Professional starts at $4,790 per year for a 1-year license. Multi-year commitments offer discounts, with 2-year licenses at $9,330.95 and 3-year licenses at $13,637.54.

Source
Socket: How many zero-day attacks does Socket detect?

Socket detects over 100 zero-day attacks weekly across JavaScript, Python, and Go ecosystems.

Source
Nessus: What is the difference between Nessus Professional and Expert?

Nessus Expert costs $6,790 per year for a 1-year license (compared to $4,790 for Professional) and includes enhanced capabilities. Multi-year rates are available at discounted prices.

Source
Socket: What is precomputed reachability analysis?

Socket's precomputed reachability analysis cuts CVE false positives by 60% automatically on Team plans, and up to 90% on Enterprise plans through function-level analysis.

Source
Nessus: Does Nessus offer optional support or training?

Yes, Nessus offers add-on services: Advanced Support at $400/year provides 24x365 access to phone, email, community, and chat support. On-Demand Training costs $275/year for Fundamentals course access or $385/year for both Fundamentals and Advanced courses.

Source
Socket: Is there a discount for annual billing?

Yes. Socket offers a 20% discount for annual commitments across all subscription tiers.

Source
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