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Software · head to head

Keygen vs Nessus

K

Keygen

Software

Open, source-available software licensing API

From
On request
Rated
-
Full reviewWebsite
Nessus logo

Nessus

Software

The most trusted vulnerability assessment solution

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Nessus has a free tier, so it costs nothing to try first.
  • Each has a real cost: Keygen cloud hosted plans start at $995 per month billed per domain, a floor aimed at established software vendors rather than solo developers; Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier

Where they differ

Only the attributes on which Keygen and Nessus actually diverge.

Attributes where Keygen and Nessus differ
AttributeKeygenNessus
Starting priceOn requestFree
Free tierNoYes
PlatformsWebDesktop, Api
FoundedUnknown2002

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

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 Keygen

Nothing recorded that Nessus does not also cover.

Only in Nessus

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

What people use each for

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

Keygen

No use cases recorded yet. See the Keygen review.

Nessus

  • Scanning hosts and applications for known vulnerabilities and misconfigurationsnot Keygen
  • Running compliance and configuration audits against a defined scopenot Keygen

Where each one falls short

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

Keygen

  • Cloud hosted plans start at $995 per month billed per domain, a floor aimed at established software vendors rather than solo developers

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

Pricing, plan by plan

Keygen

On request

No published plan breakdown. See the Keygen review.

Nessus

Free
  • Nessus Essentials (Free)Free
    • 16 IP addresses
    • Vulnerability scanning
    • Configuration auditing
  • Nessus Professional$2990/year
    • Unlimited IPs
    • Compliance checks
    • Live results
  • Nessus Expert$5290/year
    • All Pro features
    • External attack surface
    • Cloud infrastructure scanning

Which should you pick?

Choose Keygen if

Nothing in the data separates Keygen from Nessus on the points above - pick on price and on how each one feels to use.

Keygen review

Choose Nessus if

  • You need vulnerability scanning.
  • You want to start without paying.
  • You work on Desktop, Api.
  • You also want configuration auditing.
Nessus review

Questions people ask

Is Keygen or Nessus better?
Neither clearly leads. Keygen starts at On request and Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keygen or Nessus?
Nessus has a free tier; the other does not. Paid plans start at On request for Keygen and Free for Nessus.
Does Keygen or Nessus run on more platforms?
Keygen runs on Web. Nessus runs on Desktop, Api.
Can I use Nessus for free?
Yes. Nessus has a free tier, so you can try it without paying. Keygen starts at On request.
What can Keygen do that Nessus cannot?
Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning.
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