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Government · head to head

CKAN vs Trimble Unity Maintain

CKAN logo

CKAN

Government

Open Source Data Portal Platform

From
Free
Rated
-
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
Rated
-
Full reviewWebsite

The short version

  • Only CKAN has a free tier, so it costs nothing to try first.
  • Each has a real cost: CKAN the package install path requires Ubuntu 20.04 or 22.04 64-bit specifically; other operating systems must use the source install; 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: CKAN covers Dataset Management, 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 CKAN and Trimble Unity Maintain actually diverge.

Attributes where CKAN and Trimble Unity Maintain differ
AttributeCKANTrimble Unity Maintain
Starting priceFreeOn request
Pricing modelfreequote
Free tierYesNo
PlatformsWebWeb, iOS, Android, Windows
Founded2006Unknown

Identical on both: user rating (Not yet rated), category (Government).

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 CKAN

  • Dataset Management
  • Data Harvesting
  • API Access
  • Visualization
  • Extensions
  • DataPusher
  • Harvester
  • Third-party Tools

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.

CKAN

  • Publishing open government datasets in a searchable public data portalnot Trimble Unity Maintain
  • Self-hosting a data catalogue with harvesting and an APInot 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 CKAN
  • A city consolidating a citizen service request line, work orders and inspections into one location-based systemnot CKAN
  • A state transportation department managing pavement and bridge assets with linear referencing rather than point assetsnot CKAN
  • A public works department that has already licensed ArcGIS Enterprise and wants to avoid rekeying its asset inventorynot CKAN

Where each one falls short

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

CKAN

  • The package install path requires Ubuntu 20.04 or 22.04 64-bit specifically; other operating systems must use the source install
  • Only Solr 9 and Solr 8 are supported, and from CKAN 2.10 they are the only Solr versions supported at all
  • A working deployment requires PostgreSQL, Solr, Redis, nginx, supervisor and uWSGI to be installed and maintained separately
  • Python 3.10 or later is required

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

CKAN

Free
  • Open SourceFree
    • Data Management
    • API Access
    • Visualization

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 CKAN if

  • You need dataset management.
  • You want to start without paying.
  • You also want data harvesting.
CKAN 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 CKAN or Trimble Unity Maintain better?
Neither clearly leads. CKAN starts at Free 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, CKAN or Trimble Unity Maintain?
CKAN has a free tier; the other does not. Paid plans start at Free for CKAN and On request for Trimble Unity Maintain.
Does CKAN or Trimble Unity Maintain run on more platforms?
CKAN runs on Web. Trimble Unity Maintain runs on Web, iOS, Android, Windows.
Can I use CKAN for free?
Yes. CKAN has a free tier, so you can try it without paying. Trimble Unity Maintain starts at On request.
What is CKAN best used for?
CKAN is most often used for publishing open government datasets in a searchable public data portal, self-hosting a data catalogue with harvesting and an api. Of those, publishing open government datasets in a searchable public data portal and self-hosting a data catalogue with harvesting and an api are not what Trimble Unity Maintain is typically brought in for.
What can CKAN do that Trimble Unity Maintain cannot?
CKAN covers Dataset Management, Data Harvesting, API Access, Visualization. Trimble Unity Maintain covers Built on ArcGIS, Service requests, Work order management, Permits and licensing.

Answered from the vendors’ own pages

CKAN: Is CKAN open-source and what license is it available under?

Yes, CKAN is an open-source data management system built on Python and available on GitHub. The license terms are available on their GitHub repository.

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.

CKAN: Does CKAN offer commercial support for organizations?

Yes, CKAN offers commercial support through certified providers including Link Digital and Datopian. Support includes advisory services, application development, integration, managed hosting, and web development.

Source
Trimble Unity Maintain: Do I need Esri ArcGIS?

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

CKAN: Who is responsible for hosting costs when running CKAN?

Organizations deploying CKAN are responsible for their own hosting infrastructure. Commercial providers like Datopian and Link Digital offer managed hosting services if organizations prefer not to self-host.

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.

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