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Cybersecurity · head to head

Nessus vs Polco

Nessus logo

Nessus

Cybersecurity

The most trusted vulnerability assessment solution

From
$4790/year
Free plan
No
Full reviewWebsite
Polco logo

Polco

Government

Civic Engagement and Polling Platform

From
$300/month
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; Polco interface has a formal, academic tone compared to modern civic engagement platforms
  • They diverge on capability: Nessus covers Vulnerability scanning, Polco covers Scientific Surveys.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Nessus and Polco actually diverge.

Attributes where Nessus and Polco differ
AttributeNessusPolco
Starting price$4790/year$300/month
PlatformsDesktop, ApiWeb, Ios, Android
CategoryCybersecurityGovernment
Founded20022015

Identical on both: pricing model (subscription), 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 Polco

  • Scientific Surveys
  • Live Polling
  • Community Benchmarking
  • Priority-Based Budgeting
  • Demographic Analysis
  • NRC Surveys
  • ArcGIS
  • Social Media

What people use each for

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

Nessus

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

Polco

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

Polco

  • Interface has a formal, academic tone compared to modern civic engagement platforms
  • Emphasizes surveys and benchmarking over open discussion forums and idea boards
  • Pricing is custom quote-based without transparent pricing on the website

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

Polco

$300/month
  • Community Engagement$300/month
    • Community Surveys
    • Live Polling
    • Benchmarking

Which should you pick?

Choose Nessus if

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

Choose Polco if

  • You need scientific surveys.
  • You work on Web, Ios, Android.
  • You also want live polling.
Polco review

Questions people ask

Is Nessus or Polco better?
Neither clearly leads. Nessus starts at $4790/year and Polco at $300/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Nessus or Polco?
Nessus starts at $4790/year and Polco at $300/month.
Does Nessus or Polco run on more platforms?
Nessus runs on Desktop, Api. Polco runs on Web, Ios, Android.
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 Polco is typically brought in for.
What can Nessus do that Polco cannot?
Nessus covers Vulnerability scanning, Configuration auditing, Malware detection, Web application scanning. Polco covers Scientific Surveys, Live Polling, Community Benchmarking, Priority-Based Budgeting.

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
Polco: How does Polco ensure survey data quality?

Polco uses scientific survey methodology through the National Research Center, with pre-tested survey questions and verification that participants live in the surveyed area to eliminate outside interference and bad-faith responses.

Source
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
Polco: What's the difference between Polco and open discussion platforms?

Polco emphasizes scientific surveys and benchmarking over open forums or suggestion boards, prioritizing rigorous data collection for policy decisions over broad community brainstorming.

Source
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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