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Government · head to head

DataSF vs Tenable

DataSF logo

DataSF

Government

San Francisco Open Data Portal

From
Free
Free plan
Yes
Full reviewWebsite
Tenable logo

Tenable

Cybersecurity

AI-powered exposure management platform for unified security visibility

From
$3500/year
Free plan
No
Full reviewWebsite

The short version

  • Only DataSF has a free tier, so it costs nothing to try first.
  • They diverge on capability: DataSF covers Open Datasets, Tenable covers Unified attack surface mapping.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which DataSF and Tenable actually diverge.

Attributes where DataSF and Tenable differ
AttributeDataSFTenable
Starting priceFree$3500/year
Pricing modelfreesubscription
Free tierYesNo
PlatformsWebCloud, Web
CategoryGovernmentCybersecurity
Founded2009Unknown

Identical on both: 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 DataSF

  • Open Datasets
  • Data API
  • Visualizations
  • Data Catalog
  • Automated Updates
  • Socrata
  • ArcGIS
  • Analysis Tools

Only in Tenable

  • Unified attack surface mapping
  • Exposure intelligence enrichment
  • Tenable Hexa AI orchestration
  • Cloud Exposure (CNAPP)
  • OT Exposure
  • Identity Exposure
  • Vulnerability Management
  • Attack Surface Management

What people use each for

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

DataSF

  • Citizen Servicesnot Tenable
  • Records Managementnot Tenable
  • Public Safetynot Tenable
  • Civic Engagementnot Tenable

Tenable

  • Comprehensive vulnerability scanning for enterprise networksnot DataSF
  • Cloud security monitoring and compliance for AWS, Azure, GCPnot DataSF
  • Identity and access management risk assessmentnot DataSF
  • Operational technology security for industrial systemsnot DataSF
  • Attack surface management for third-party risknot DataSF

Where each one falls short

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

DataSF

Nothing recorded yet. See the DataSF review.

Tenable

  • Pricing starts at $3500/year for Tenable One VM, expensive for small organizations
  • Many enterprise features require custom quote and sales engagement
  • Cloud Exposure, OT Exposure, and other modules have no published pricing
  • Multi-year contracts common, limiting flexibility
  • Setup and configuration complexity for enterprise deployments

Pricing, plan by plan

DataSF

Free
  • Public AccessFree
    • Dataset Access
    • API Access
    • Visualizations

Tenable

$3500/year
  • Tenable One Vulnerability Management$3500/year
    • Per 100 assets
    • Multi-year discounts available
  • Tenable One Web App Scanning$3578/year
    • Per 5 FQDNs
    • Annual subscription
  • Nessus Professional$4790/year
    • Vulnerability scanning
    • Multi-year discounts available
    • Optional advanced support: $400/year
  • Nessus Expert$6790/year
    • Advanced vulnerability scanning
    • Multi-year discounts available
    • Optional advanced support: $400/year

Which should you pick?

Choose DataSF if

  • You need open datasets.
  • You want to start without paying.
  • You also want data api.
DataSF review

Choose Tenable if

  • You need unified attack surface mapping.
  • You work on Cloud, Web.
  • You also want exposure intelligence enrichment.
Tenable review

Questions people ask

Is DataSF or Tenable better?
Neither clearly leads. DataSF starts at Free and Tenable at $3500/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DataSF or Tenable?
DataSF has a free tier; the other does not. Paid plans start at Free for DataSF and $3500/year for Tenable.
Does DataSF or Tenable run on more platforms?
DataSF runs on Web. Tenable runs on Cloud, Web.
Can I use DataSF for free?
Yes. DataSF has a free tier, so you can try it without paying. Tenable starts at $3500/year.
What is DataSF best used for?
DataSF is most often used for citizen services, records management, public safety, civic engagement. Of those, citizen services and records management are not what Tenable is typically brought in for.
What can DataSF do that Tenable cannot?
DataSF covers Open Datasets, Data API, Visualizations, Data Catalog. Tenable covers Unified attack surface mapping, Exposure intelligence enrichment, Tenable Hexa AI orchestration, Cloud Exposure (CNAPP).

Answered from the vendors’ own pages

Tenable: How is Tenable One pricing structured?

Tenable One Vulnerability Management costs $3500/year per 100 assets. Web App Scanning is $3578/year per 5 FQDNs. Multi-year discounts are available.

Source
Tenable: What is the difference between Nessus Professional and Nessus Expert?

Nessus Professional costs $4790/year and provides core vulnerability scanning. Nessus Expert costs $6790/year and offers advanced scanning capabilities.

Source
Tenable: Are custom support and training available for Tenable?

Yes. Optional advanced support is available for $400/year. Training courses range from $275-$385/year.

Source
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