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# Tenable Nessus vs Zenmap Comparison - What are their main differences?

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Tenable NessusZenmap[+ Add Product](#)

Reviews

**Tenable Nessus** [

4.5/5(320)

](https://www.g2.com/products/tenable-nessus/reviews#reviews)

**Zenmap** [

4.5/5(28)

](https://www.g2.com/products/zenmap/reviews#reviews)

Pricing

**Tenable Nessus**
Free Trial

**$3,390.00** 1 License With One-Time Purchase · Pro - 1 Year

**Zenmap**
No pricing available

**Pricing Insights**
from reviews

Time to Implement

**Tenable Nessus**
1 month

Based on 24 responses

**Zenmap**
Not enough reviews yet

Return on Investment

**Tenable Nessus**
12 months

Based on 20 responses

**Zenmap**
Not enough reviews yet

Perceived Cost

**Tenable Nessus**
$$$$$

**Zenmap**
$$$$$

Average Discount

**Tenable Nessus**
8%

**Zenmap**
Not enough reviews yet

Pros & Cons

**Tenable Nessus**
[
Vulnerability Identification (21)
](https://www.g2.com/products/tenable-nessus/reviews?filters%5Bsentiment_snippet%5D=1158838&qs=pros-and-cons#reviews)[
Vulnerability Detection (19)
](https://www.g2.com/products/tenable-nessus/reviews?filters%5Bsentiment_snippet%5D=1158713&qs=pros-and-cons#reviews)[
Slow Scanning (8)
](https://www.g2.com/products/tenable-nessus/reviews?filters%5Bsentiment_snippet%5D=1158016&qs=pros-and-cons#reviews)[
Expensive (6)
](https://www.g2.com/products/tenable-nessus/reviews?filters%5Bsentiment_snippet%5D=2314763&qs=pros-and-cons#reviews)

**Zenmap**
[
Ease of Use (1)
](https://www.g2.com/products/zenmap/reviews?filters%5Bsentiment_snippet%5D=1066919&qs=pros-and-cons#reviews)[
Implementation Ease (1)
](https://www.g2.com/products/zenmap/reviews?filters%5Bsentiment_snippet%5D=1066936&qs=pros-and-cons#reviews)[
Issue Management (1)
](https://www.g2.com/products/zenmap/reviews?filters%5Bsentiment_snippet%5D=1066910&qs=pros-and-cons#reviews)[
Poor Interface Design (1)
](https://www.g2.com/products/zenmap/reviews?filters%5Bsentiment_snippet%5D=1066973&qs=pros-and-cons#reviews)

Integrations

**Tenable Nessus**
[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_da836c06c61c98d4a0795c7cfc3a9a5a/servicenow-it-service-management.jpg "Product Avatar Image")

ServiceNow IT Service...

](https://www.g2.com/products/servicenow-it-service-management/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_91bcb2c063fcfb0a82dfedcf1a6463d1/splunk-enterprise.jpg "Product Avatar Image")

Splunk Enterprise

](https://www.g2.com/products/splunk-enterprise/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_cbd3fb3d7b519da99e67a6ef0172fadf/tenable-security-center.png "Product Avatar Image")

Tenable Security Center

](https://www.g2.com/products/tenable-security-center/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_cbd3fb3d7b519da99e67a6ef0172fadf/tenable-vulnerability-management.png "Product Avatar Image")

Tenable Vulnerability...

](https://www.g2.com/products/tenable-vulnerability-management/reviews)[
View all
](https://www.g2.com/products/tenable-nessus/integrations)

**Zenmap**
Not enough data

Screenshots

**Tenable Nessus**
 ![Tenable Nessus screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/91875/grouped-view-1.png)

**Zenmap**
No screenshot available

Ratings

Meets Requirements

**Tenable Nessus**

9.0

9.0263

**Zenmap**

9.1

9.123

Ease of Use

**Tenable Nessus**

8.9

8.9266

**Zenmap**

8.8

8.823

Ease of Setup

**Tenable Nessus**

8.8

8.8188

**Zenmap**

8.9

8.911

Ease of Admin

**Tenable Nessus**

8.9

8.9174

**Zenmap**

8.7

8.710

Quality of Support

**Tenable Nessus**

8.4

8.4243

**Zenmap**

8.1

8.114

Has the product been a good partner in doing business?

**Tenable Nessus**

8.7

8.7162

**Zenmap**

7.9

7.97

Product Direction (% positive)

**Tenable Nessus**

8.9

8.9249

**Zenmap**

9.5

9.523

Features

Vulnerability Scanner[Hide 58 FeaturesShow 58 Features](javascript:void(0);)

8.4

173

8.1

19

Performance

Detection Rate

8.9(won by 0.1)

145

|

Verified

8.8

16

|

Verified

False Positives

6.7

142

|

Verified

6.9(won by 0.2)

15

|

Verified

Automated Scans

9.1(won by 0.8)

141

|

Verified

 (There is a greater than 0.5 difference between this product's rating and its competitors)

8.3

12

Issue Tracking

Feature Not Available

7.3(won by default)

13

Anomaly/Malware Detection

Not enough data

Not enough data

Network

Compliance Testing

8.8(won by 0.2)

140

|

Verified

8.6

14

Perimeter Scanning

8.9

136

|

Verified

9.0(won by 0.1)

16

Configuration Monitoring

8.4(won by 1.1)

112

|

Verified

 (There is a greater than 0.5 difference between this product's rating and its competitors)

7.3

13

Vulnerability Scanning

10.0(won by default)

10

Not enough data

Source-Code Scanning

Not enough data

Not enough data

Web Scanning

Not enough data

Not enough data

Application

Static Code Analysis

7.3

85

8.7(won by 1.4)

9

|

Verified

 (There is a greater than 0.5 difference between this product's rating and its competitors)

Manual Application Testing

Feature Not Available

8.3(won by default)

14

|

Verified

Black Box Testing

7.8(won by default)

104

Feature Not Available

Risk Analysis

Not enough data

Not enough data

Agentic AI - Vulnerability Scanner

Autonomous Task Execution

8.3(won by default)

10

Not enough data

Proactive Assistance

8.1(won by default)

9

Not enough data

Additional Functionality

SSL Security

Not enough data

Not enough data

HIPAA Compliant

Not enough data

Not enough data

API

Not enough data

Not enough data

Threat Response

Not enough data

Not enough data

Endpoint Protection

Not enough data

Not enough data

Maintenance Scheduling

Not enough data

Not enough data

Third-Party Integrations

Not enough data

Not enough data

Security Auditing

Not enough data

Not enough data

Application Security

Not enough data

Not enough data

Encryption

Not enough data

Not enough data

Network Security

Not enough data

Not enough data

Real-Time Reporting

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Authentication

Not enough data

Not enough data

Financial Data Protection

Not enough data

Not enough data

Anti Virus

Not enough data

Not enough data

Secure Data Storage

Not enough data

Not enough data

Virus Definition Update

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

VPN

Not enough data

Not enough data

Audit Trail

Not enough data

Not enough data

Anti Spam

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Data Visualization

Not enough data

Not enough data

Alerts/Escalation

Not enough data

Not enough data

Data Security

Not enough data

Not enough data

Runtime Container Security

Not enough data

Not enough data

Asset Discovery

Not enough data

Not enough data

Threat Intelligence

Not enough data

Not enough data

Vulnerability Protection

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Vulnerability/Threat Prioritization

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

SQL Injections

Not enough data

Not enough data

Real-Time Analytics

Not enough data

Not enough data

Threat Protection

Not enough data

Not enough data

Web-Application Security

Not enough data

Not enough data

Password Protection

Not enough data

Not enough data

Website Crawling

Not enough data

Not enough data

Vulnerability Assessment

Not enough data

Not enough data

Attack Surface Management[Hide 42 FeaturesShow 42 Features](javascript:void(0);)

8.4

7

Not enough data

Asset Management

Asset Discovery

7.4(won by default)

7

Not enough data

Shadow IT Detection

7.9(won by default)

7

Not enough data

Change Management

5.5(won by default)

7

Not enough data

Compliance Management

Not enough data

Not enough data

Monitoring

Gap Analysis

8.6(won by default)

7

Not enough data

Vulnerability Intelligence

10.0(won by default)

7

Not enough data

Compliance Monitoring

8.8(won by default)

7

Not enough data

Continuous Monitoring

9.3(won by default)

7

Not enough data

Server Monitoring

Not enough data

Not enough data

Real-Time Monitoring

Not enough data

Not enough data

Risk Management

Risk-Prioritization

9.3(won by default)

7

Not enough data

Reconnaissance

9.0(won by default)

7

Not enough data

At-Risk Analysis

8.6(won by default)

7

Not enough data

Threat Intelligence

9.3(won by default)

7

Not enough data

Generative AI

AI Text Summarization

7.3(won by default)

5

Not enough data

Additional Functionality

SSL Security

Not enough data

Not enough data

HIPAA Compliant

Not enough data

Not enough data

API

Not enough data

Not enough data

Threat Response

Not enough data

Not enough data

Endpoint Protection

Not enough data

Not enough data

Maintenance Scheduling

Not enough data

Not enough data

Third-Party Integrations

Not enough data

Not enough data

Security Auditing

Not enough data

Not enough data

Application Security

Not enough data

Not enough data

Encryption

Not enough data

Not enough data

Network Security

Not enough data

Not enough data

Real-Time Reporting

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Authentication

Not enough data

Not enough data

Financial Data Protection

Not enough data

Not enough data

Anti Virus

Not enough data

Not enough data

Secure Data Storage

Not enough data

Not enough data

Virus Definition Update

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

VPN

Not enough data

Not enough data

Audit Trail

Not enough data

Not enough data

Anti Spam

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Data Visualization

Not enough data

Not enough data

Alerts/Escalation

Not enough data

Not enough data

Data Security

Not enough data

Not enough data

Show 4 feature categories with incomplete data

Vulnerability Management[Hide 36 FeaturesShow 36 Features](javascript:void(0);)

Not enough data

Not enough data

Additional Functionality

Search/Filter

Not enough data

Not enough data

Risk Management

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Compliance Management

Not enough data

Not enough data

Third-Party Integrations

Not enough data

Not enough data

Certificate Assessment

Not enough data

Not enough data

API

Not enough data

Not enough data

Incident Management

Not enough data

Not enough data

Automated Containment

Not enough data

Not enough data

Real-Time Data

Not enough data

Not enough data

Vulnerability Scanning

Not enough data

Not enough data

Monitoring

Not enough data

Not enough data

Policy Management

Not enough data

Not enough data

Asset Discovery

Not enough data

Not enough data

Penetration Testing

Not enough data

Not enough data

Runtime Container Security

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Security Auditing

Not enough data

Not enough data

Issue Tracking

Not enough data

Not enough data

Threat Intelligence

Not enough data

Not enough data

Patch Management

Not enough data

Not enough data

Endpoint Management

Not enough data

Not enough data

Collaboration Tools

Not enough data

Not enough data

Vulnerability Management

Not enough data

Not enough data

Goal Setting/Tracking

Not enough data

Not enough data

Vulnerability Assessment

Not enough data

Not enough data

Asset Tagging

Not enough data

Not enough data

Assessment Management

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Vulnerability/Threat Prioritization

Not enough data

Not enough data

Vulnerability Protection

Not enough data

Not enough data

Risk Assessment

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

SQL Injections

Not enough data

Not enough data

Dynamic Application Security Testing (DAST)[Hide 13 FeaturesShow 13 Features](javascript:void(0);)

Not enough data

Not enough data

Administration

API / Integrations

Not enough data

Not enough data

Extensibility

Not enough data

Not enough data

Analysis

Reporting and Analytics

Not enough data

Not enough data

Issue Tracking

Not enough data

Not enough data

Static Code Analysis

Not enough data

Not enough data

Vulnerability Scan

Not enough data

Not enough data

Code Analysis

Not enough data

Not enough data

Testing

Manual Testing

Not enough data

Not enough data

Test Automation

Not enough data

Not enough data

Compliance Testing

Not enough data

Not enough data

Black-Box Scanning

Not enough data

Not enough data

Detection Rate

Not enough data

Not enough data

False Positives

Not enough data

Not enough data

API Security[Hide 10 FeaturesShow 10 Features](javascript:void(0);)

Not enough data

Not enough data

API Management 

API Discovery

Not enough data

Not enough data

API Monitoring

Not enough data

Not enough data

Reporting

Not enough data

Not enough data

Change Management

Not enough data

Not enough data

Security Testing

Compliance Monitoring

Not enough data

Not enough data

API Verification

Not enough data

Not enough data

API Testing

Not enough data

Not enough data

Security Management

Security and Policy Enforcement

Not enough data

Not enough data

Anomoly Detection

Not enough data

Not enough data

Bot Detection

Not enough data

Not enough data

Cloud Security[Hide 48 FeaturesShow 48 Features](javascript:void(0);)

Not enough data

Not enough data

Cloud Visibility

Data Discovery

Not enough data

Not enough data

Cloud Registry

Not enough data

Not enough data

Cloud Gap Analytics

Not enough data

Not enough data

Security

Data Security

Not enough data

Not enough data

Data loss Prevention

Not enough data

Not enough data

Security Auditing

Not enough data

Not enough data

Real-Time Data

Not enough data

Not enough data

Cloud Application Security

Not enough data

Not enough data

SSL Security

Not enough data

Not enough data

Identity

SSO

Not enough data

Not enough data

Governance

Not enough data

Not enough data

User Analytics

Not enough data

Not enough data

Real-Time Analytics

Not enough data

Not enough data

Visual Analytics

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Additional Functionality

Alerts/Notifications

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Access Controls/Permissions

Not enough data

Not enough data

Endpoint Management

Not enough data

Not enough data

Intrusion Detection System

Not enough data

Not enough data

Compliance Management

Not enough data

Not enough data

HIPAA Compliant

Not enough data

Not enough data

Search/Filter

Not enough data

Not enough data

API

Not enough data

Not enough data

Two-Factor Authentication

Not enough data

Not enough data

Data Visualization

Not enough data

Not enough data

Risk Assessment

Not enough data

Not enough data

Real-Time Monitoring

Not enough data

Not enough data

Event Logs

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Audit Management

Not enough data

Not enough data

Cloud Security Policy Management

Not enough data

Not enough data

Vulnerability Protection

Not enough data

Not enough data

Anti Virus

Not enough data

Not enough data

Incident Management

Not enough data

Not enough data

Threat Intelligence

Not enough data

Not enough data

Real-Time Reporting

Not enough data

Not enough data

Reporting & Statistics

Not enough data

Not enough data

User Management

Not enough data

Not enough data

Encryption

Not enough data

Not enough data

Vulnerability Scanning

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Status Tracking

Not enough data

Not enough data

Third-Party Integrations

Not enough data

Not enough data

Real-Time Notifications

Not enough data

Not enough data

Patch Management

Not enough data

Not enough data

Monitoring

Not enough data

Not enough data

Cloud Encryption

Not enough data

Not enough data

User Insights

Reviewers' Company Size

[![Tenable Nessus](https://images.g2crowd.com/uploads/product/hd_favicon/127e03b7d601741c15306f07b0f8cf84/tenable-nessus.svg "Tenable Nessus")](https://www.g2.com/products/tenable-nessus/reviews)

Tenable Nessus

Small-Business(50 or fewer emp.)

25.5%

Mid-Market(51-1000 emp.)

40.4%

Enterprise(\> 1000 emp.)

34.1%

[![Zenmap](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_d3d729786f0d243b2655429c8c2a9611/zenmap.png "Zenmap")](https://www.g2.com/products/zenmap/reviews)

Zenmap

Small-Business(50 or fewer emp.)

36.0%

Mid-Market(51-1000 emp.)

44.0%

Enterprise(\> 1000 emp.)

20.0%

Small-Business

(50 or fewer emp.)

25.5%

36.0%

Mid-Market

(51-1000 emp.)

40.4%

44.0%

Enterprise

(\> 1000 emp.)

34.1%

20.0%

Reviewers' Industry

[![Tenable Nessus](https://images.g2crowd.com/uploads/product/hd_favicon/127e03b7d601741c15306f07b0f8cf84/tenable-nessus.svg "Tenable Nessus")](https://www.g2.com/products/tenable-nessus/reviews)
Tenable Nessus

Information Technology and Services

25.3%

Computer & Network Security

16.7%

Financial Services

7.0%

Computer Software

5.7%

Banking

5.0%

Other

40.3%

[![Zenmap](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_d3d729786f0d243b2655429c8c2a9611/zenmap.png "Zenmap")](https://www.g2.com/products/zenmap/reviews)
Zenmap

Information Technology and Services

38.5%

Computer Networking

11.5%

Computer & Network Security

11.5%

Marketing and Advertising

7.7%

Education Management

7.7%

Other

23.1%

FAQs

## Tenable Nessus vs Zenmap FAQs

Generated using AI

Last updated: August 15, 2026

### What is the difference between Tenable Nessus vs Zenmap?

Tenable Nessus stands out for its automated vulnerability identification and detection, while Zenmap is favored for its ease of use and implementation simplicity.

| [Tenable Nessus](https://www.g2.com/products/tenable-nessus/reviews) | [Zenmap](https://www.g2.com/products/zenmap/reviews) |
| --- | --- |
| 4.5/5 (305 reviews) | 4.5/5 (28 reviews) |
| Mid-Market | Mid-Market |
| 8.8 | 8.9 |
| 8.4 | 8.1 |
| Vulnerability Identification (20 all-time mentions) | Ease of Use (recent reviews) |

### How do the pricing models of Tenable Nessus and Zenmap compare?

Reviewers rate Tenable Nessus and Zenmap at parity for value, with both products scoring closely on price satisfaction.

- **Tenable Nessus:** In recent reviews, several reviewers cite increasing costs and licensing complexity as trade-offs, but also note the product's comprehensive feature set and automation capabilities.
- **Zenmap:** Reviewers consistently highlight Zenmap's free availability and cost-effectiveness, especially for small businesses and individual users.

### What are the best alternatives to Tenable Nessus and Zenmap?

The top three alternatives to Tenable Nessus and Zenmap are Intruder, Invicti, and OpenVAS.

| Product | G2 Rating (reviews) | Largest Segment | Pricing Insight | Top Reviewer-Cited Strength |
| --- | --- | --- | --- | --- |
| [Tenable Nessus](https://www.g2.com/products/tenable-nessus/reviews) | 4.5/5 (305 reviews) | Mid-Market | Pricing could be a barrier for some shops | Vulnerability Identification (20 all-time mentions) |
| [Zenmap](https://www.g2.com/products/zenmap/reviews) | 4.5/5 (28 reviews) | Mid-Market | Completely free and cost-effective | Ease of Use (recent reviews) |
| [Intruder](https://www.g2.com/products/intruder/reviews) | 4.8/5 (209 reviews) | — | — | — |
| [Invicti](https://www.g2.com/products/invicti/reviews) | 4.5/5 (72 reviews) | Enterprise | — | — |
| [OpenVAS](https://www.g2.com/products/openvas/reviews) | 4.4/5 (32 reviews) | Mid-Market | — | — |

### Which Vulnerability Scanner features should I prioritize when comparing Tenable Nessus and Zenmap?

Buyers should prioritize vulnerability identification, ease of use, automation, reporting, and integration capabilities when comparing Tenable Nessus and Zenmap.

- **Vulnerability Identification:** Tenable Nessus (20 all-time mentions), Zenmap (recent reviews highlight effectiveness for port and vulnerability scanning).
- **Ease of Use:** Tenable Nessus (16 all-time mentions), Zenmap (recent reviews consistently cite ease of use).
- **Automation:** Tenable Nessus (15 all-time mentions), Zenmap (manual workflows, no automation endpoints).
- **Reporting:** Tenable Nessus (detailed, audit-friendly reports frequently cited), Zenmap (visual topology and diff features, but some reviewers note limited reporting customization).
- **Integration Capabilities:** Tenable Nessus (integrates with other tools via APIs and plugins), Zenmap (no automation endpoints, limited integration options).

### What are the pros and cons of Tenable Nessus vs Zenmap?

Tenable Nessus is strongest in automated vulnerability identification, while Zenmap's headline strength is ease of use and implementation simplicity.

- **Tenable Nessus strengths:** Vulnerability Identification (20 all-time mentions), Vulnerability Detection (18), Ease of Use (16), Automated Scanning (15), Features (13), User Interface (13), Security (9), Scanning Technology (7), Automation (6), Security Testing (6), Software Updates (6), Customer Support (5), Detailed Information (5), Flexibility (5), Setup Ease (5).
- **Tenable Nessus trade-offs:** Slow Scanning (7), Expensive (6), Limited Features (6), Complexity (5), False Positives (5).
- **Zenmap strengths:** Ease of Use (recent reviews), Implementation Ease (recent reviews).
- **Zenmap trade-offs:** Issue Management (recent reviews), Poor Interface Design (recent reviews).

### Is Tenable Nessus or Zenmap better for small businesses?

Zenmap is better suited for small businesses due to its free availability and ease of use, while Tenable Nessus is more commonly adopted in mid-market environments.

- **Tenable Nessus:** Largest segment is Mid-Market; reviewers note comprehensive features but mention pricing as a barrier for smaller organizations.
- **Zenmap:** Largest segment is Mid-Market; reviewers highlight its cost-effectiveness and simplicity, making it attractive for small businesses and individual users.

### Which Vulnerability Scanner platform has better integrations?

Tenable Nessus is favored for integrations, with reviewers citing its API and plugin support, while Zenmap is noted for limited integration options.

- **Tenable Nessus:** Reviewers mention integration with HCL BigFix and other tools via APIs and plugins in recent reviews.
- **Zenmap:** Reviewers note the lack of automation endpoints and limited integration capabilities.

### How do Tenable Nessus and Zenmap compare on customer support?

Tenable Nessus and Zenmap are rated at near-parity for Quality of Support, with Tenable Nessus at 8.4 and Zenmap at 8.1, a difference below the materiality threshold.

- **Tenable Nessus:** Reviewers frequently describe support as helpful and responsive, with several citing quick assistance and clear guidance.
- **Zenmap:** Reviewers mention community support and available help, but also note occasional challenges with interface design and documentation.

### Which is easier to implement, Tenable Nessus or Zenmap?

Tenable Nessus and Zenmap score within a tenth of a point on Ease of Setup, with Zenmap at 8.9 and Tenable Nessus at 8.8, indicating parity.

- **Tenable Nessus:** Reviewers consistently highlight straightforward deployment and configuration, with many citing ease of setup and a user-friendly interface.
- **Zenmap:** Reviewers describe Zenmap as easy to install and implement, with particular praise for its intuitive GUI and minimal setup requirements.

### Which product has better False Positives?

Tenable Nessus is rated stronger on minimizing false positives, with reviewers citing a low false positive rate and actionable results, while Zenmap has occasional mentions of false positives in port information.

- **Tenable Nessus:** False Positives (5 all-time mentions), reviewers highlight low false positive rates and accurate findings.
- **Zenmap:** Reviewers note some false positives in port information, but these are less frequently cited.

Alternatives

**Tenable Nessus Alternatives**

 ![Intruder](https://images.g2crowd.com/uploads/product/hd_favicon/1539808658/intruder.svg "Intruder")

[
Intruder
](/products/intruder/reviews)

 ![Invicti](https://images.g2crowd.com/uploads/product/hd_favicon/3bee4d2b732dab5368b9a8aa21f05e30/invicti.svg "Invicti")

[
Invicti
](/products/invicti/reviews)

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