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Cybersecurity · head to head

Delinea vs Nessus

Delinea logo

Delinea

Cybersecurity

Privileged access management from the merged Thycotic and Centrify

From
On request
Rated
-
Full reviewWebsite
Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Delinea the Thycotic and Centrify lineages are integrated unevenly, so buying the full portfolio means running consoles and agents that do not share one administrative model as cleanly as the marketing suggests.; Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier
  • They diverge on capability: Delinea covers Secret Server, Nessus covers Vulnerability scanning.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Delinea and Nessus actually diverge.

Attributes where Delinea and Nessus differ
AttributeDelineaNessus
Starting priceOn request$4790/year
Pricing modelquotesubscription
PlatformsWeb, Windows, Linux, macOSDesktop, Api
FoundedUnknown2002

Identical on both: free tier (No), 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 Delinea

  • Secret Server
  • Privileged session recording
  • Privilege Manager
  • Server PAM
  • Discovery
  • DevOps secrets
  • Behaviour analytics

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.

Delinea

  • An organisation whose cyber insurer now requires privileged credentials to be vaulted and rotatednot Nessus
  • A mid-market IT team that abandoned a heavier PAM rollout and needs a vault that can be in production in weeksnot Nessus
  • A company removing local administrator rights from every workstation after a ransomware incidentnot Nessus
  • An audit finding that shared service account passwords are stored in a spreadsheet and used by contractorsnot Nessus

Nessus

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

Where each one falls short

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

Delinea

  • The Thycotic and Centrify lineages are integrated unevenly, so buying the full portfolio means running consoles and agents that do not share one administrative model as cleanly as the marketing suggests.
  • Modules are licensed separately by different units, per privileged user for the vault and per endpoint for privilege management, which makes total cost hard to model and easy to underestimate at scale.
  • Delinea does not publish rates, so buyers benchmark against third party and public sector listings; expect list prices to be negotiable by a wide margin, which means the first quote is not the price.
  • Thoma Bravo ownership since 2021 has coincided with firmer renewal pricing, and buyers with a single-vendor PAM estate have little leverage once credentials are inside the vault.
  • Migrating out of a privileged access vault is a genuinely hard project because every automated process that fetches a secret has to be repointed, so the switching cost is real and the vendor knows it.

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

Delinea

On request
  • Secret Server$undefined/year
    • Priced per privileged user, tiered by edition
    • Cloud or on premises deployment
    • Session recording in higher editions
  • Privilege Manager$undefined/year
    • Priced per endpoint
    • Local admin rights removal and application elevation
    • Licensed separately from Secret Server
  • Server PAM$undefined/year
    • Priced per managed server or per privileged user
    • Just-in-time server access
    • Licensed separately

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

Which should you pick?

Choose Delinea if

  • You need secret server.
  • You work on Web, Windows, Linux, macOS.
  • You also want privileged session recording.
Delinea review

Choose Nessus if

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

Questions people ask

Is Delinea or Nessus better?
Neither clearly leads. Delinea starts at On request and Nessus at $4790/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Delinea or Nessus?
Delinea starts at On request and Nessus at $4790/year.
Does Delinea or Nessus run on more platforms?
Delinea runs on Web, Windows, Linux, macOS. Nessus runs on Desktop, Api.
What is Delinea best used for?
Delinea is most often used for an organisation whose cyber insurer now requires privileged credentials to be vaulted and rotated, a mid-market it team that abandoned a heavier pam rollout and needs a vault that can be in production in weeks, a company removing local administrator rights from every workstation after a ransomware incident, an audit finding that shared service account passwords are stored in a spreadsheet and used by contractors. Of those, an organisation whose cyber insurer now requires privileged credentials to be vaulted and rotated and a mid-market it team that abandoned a heavier pam rollout and needs a vault that can be in production in weeks are not what Nessus is typically brought in for.
What can Delinea do that Nessus cannot?
Delinea covers Secret Server, Privileged session recording, Privilege Manager, Server PAM. Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning.

Answered from the vendors’ own pages

Delinea: Is Delinea the same as Thycotic?

Delinea is the merged company formed from Thycotic and Centrify in 2021. Secret Server is the former Thycotic product; the server access products come from Centrify.

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
Delinea: Is pricing published?

Not by Delinea. Public sector frameworks have listed Secret Server Cloud around 348 GBP per user per year, which is a reference point, not a quote.

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
Delinea: Does one licence cover endpoints and servers?

No. Secret Server, Privilege Manager and Server PAM are separately licensed on different units. Scope all three if your requirement spans them.

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
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