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Cybersecurity · head to head

Nessus vs NetDocuments

Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Rated
-
Full reviewWebsite
NetDocuments logo

NetDocuments

Legal

Cloud document management for law firms

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Nessus nessus Professional is $4,790 for one year, with no free or low cost commercial tier; NetDocuments quote-only pricing per user with no published rates
  • They diverge on capability: Nessus covers Vulnerability scanning, NetDocuments covers Matter-centric filing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Nessus and NetDocuments actually diverge.

Attributes where Nessus and NetDocuments differ
AttributeNessusNetDocuments
Starting price$4790/yearOn request
Pricing modelsubscriptionquote
PlatformsDesktop, ApiWeb, Windows, iOS, Android, Cloud
CategoryCybersecurityLegal
Founded2002Unknown

Identical on both: free tier (No), 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 Nessus

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

Only in NetDocuments

  • Matter-centric filing
  • Ethical walls
  • Email management
  • Version control
  • Search
  • Retention

What people use each for

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

Nessus

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

NetDocuments

  • Firms needing enforceable ethical walls rather than folder permissionsnot Nessus
  • Capturing email into the matter record instead of individual inboxesnot Nessus
  • Moving document management off on-premise serversnot 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

NetDocuments

  • Quote-only pricing per user with no published rates
  • Migrating an existing document store is a substantial project, and legacy metadata rarely survives cleanly
  • Aimed at mid-size and large firms; solo practices find it heavier than needed
  • Adoption depends on fee earners filing correctly, and habits are the hard part

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

NetDocuments

On request

No published plan breakdown. See the NetDocuments review.

Which should you pick?

Choose Nessus if

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

Choose NetDocuments if

  • You need matter-centric filing.
  • You work on Web, Windows, iOS, Android, Cloud.
  • You also want ethical walls.
NetDocuments review

Questions people ask

Is Nessus or NetDocuments better?
Neither clearly leads. Nessus starts at $4790/year and NetDocuments at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Nessus or NetDocuments?
Nessus starts at $4790/year and NetDocuments at On request.
Does Nessus or NetDocuments run on more platforms?
Nessus runs on Desktop, Api. NetDocuments runs on Web, Windows, iOS, Android, Cloud.
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 NetDocuments is typically brought in for.
What can Nessus do that NetDocuments cannot?
Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning. NetDocuments covers Matter-centric filing, Ethical walls, Email management, Version control.

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
NetDocuments: What does NetDocuments cost?

It quotes per user and does not publish rates.

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
NetDocuments: Why not just use SharePoint or Dropbox?

Neither expresses matter-centric security or ethical walls in an auditable way, which is a professional obligation rather than a preference in legal practice.

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
NetDocuments: Does it handle email?

Yes, capturing correspondence into the matter record, which is where most legal email otherwise fails to land.

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