Softwr

Cybersecurity · head to head

Nessus vs Trimble Unity Maintain

Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Free plan
No
Full reviewWebsite
Trimble Unity Maintain logo

Trimble Unity Maintain

Government

GIS-centric public asset and work management, the product formerly sold as Cityworks

From
On request
Free plan
No
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; Trimble Unity Maintain esri ArcGIS is a hard prerequisite, so an organisation without it faces a second substantial licence and a GIS programme before the maintenance system can be used at all.
  • They diverge on capability: Nessus covers Vulnerability scanning, Trimble Unity Maintain covers Built on ArcGIS.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Nessus and Trimble Unity Maintain actually diverge.

Attributes where Nessus and Trimble Unity Maintain differ
AttributeNessusTrimble Unity Maintain
Starting price$4790/yearOn request
Pricing modelsubscriptionquote
PlatformsDesktop, ApiWeb, iOS, Android, Windows
CategoryCybersecurityGovernment
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 Trimble Unity Maintain

  • Built on ArcGIS
  • Service requests
  • Work order management
  • Permits and licensing
  • Mobile field access
  • Storeroom and inventory
  • Operational Insights
  • AgileAssets convergence

What people use each for

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

Nessus

  • Vulnerability scanning for individual practitionersnot Trimble Unity Maintain
  • Enterprise vulnerability managementnot Trimble Unity Maintain
  • Web application security assessmentsnot Trimble Unity Maintain

Trimble Unity Maintain

  • A water utility wanting valve exercising and hydrant flushing recorded against the same GIS features the engineering team maintainsnot Nessus
  • A city consolidating a citizen service request line, work orders and inspections into one location-based systemnot Nessus
  • A state transportation department managing pavement and bridge assets with linear referencing rather than point assetsnot Nessus
  • A public works department that has already licensed ArcGIS Enterprise and wants to avoid rekeying its asset inventorynot 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

Trimble Unity Maintain

  • Esri ArcGIS is a hard prerequisite, so an organisation without it faces a second substantial licence and a GIS programme before the maintenance system can be used at all.
  • The product is mid-rename from Cityworks to Trimble Unity Maintain with transition timelines Trimble has not committed to publicly, leaving contracts, documentation and integrator experience split between two names.
  • CVE-2025-0994, a deserialisation flaw in Cityworks, was exploited in the wild and listed by CISA in February 2025, which makes on-premise deployments a patching obligation rather than a set-and-forget install.
  • Because assets live in the GIS, changing the asset model is a GIS division change, so maintenance teams cannot restructure their own hierarchy without another department in the loop.
  • It is built for North American public sector practice, and the permitting, funding source and reporting models do not map cleanly onto other countries or onto private industrial estates.

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

Trimble Unity Maintain

On request
  • Trimble Unity Maintain$undefined/year
    • Annual subscription sized by population served, asset volume and user count
    • Esri ArcGIS Enterprise or ArcGIS Online licensing required separately
    • Hosted and on-premise deployment priced differently

Which should you pick?

Choose Nessus if

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

Choose Trimble Unity Maintain if

  • You need built on arcgis.
  • You work on Web, iOS, Android, Windows.
  • You also want service requests.
Trimble Unity Maintain review

Questions people ask

Is Nessus or Trimble Unity Maintain better?
Neither clearly leads. Nessus starts at $4790/year and Trimble Unity Maintain at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Nessus or Trimble Unity Maintain?
Nessus starts at $4790/year and Trimble Unity Maintain at On request.
Does Nessus or Trimble Unity Maintain run on more platforms?
Nessus runs on Desktop, Api. Trimble Unity Maintain runs on Web, iOS, Android, Windows.
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 Trimble Unity Maintain is typically brought in for.
What can Nessus do that Trimble Unity Maintain cannot?
Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning. Trimble Unity Maintain covers Built on ArcGIS, Service requests, Work order management, Permits and licensing.

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
Trimble Unity Maintain: Is Cityworks discontinued?

Not discontinued, renamed. It is becoming Trimble Unity Maintain, converging with AgileAssets, and Trimble has not published a final transition date.

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
Trimble Unity Maintain: Do I need Esri ArcGIS?

Yes. The product is built on ArcGIS and cannot be deployed without an Esri licence.

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
Trimble Unity Maintain: Was there a security incident?

Yes. CVE-2025-0994 in Cityworks was exploited in the wild and added to the CISA known exploited vulnerabilities catalogue in February 2025.

Trimble Unity Maintain: Can it handle roads and pavement as well as pipes?

Yes, through the AgileAssets lineage now inside the Unity Maintain family, which adds linear referencing for transportation assets.

Share

Related pages

More on Nessus

More on Trimble Unity Maintain

Keep looking

Other head to heads