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# Invicti Web + API (formerly Acunetix) vs Tenable Nessus Comparison - What are their main differences?

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Invicti Web + API (formerly Acunetix)Tenable Nessus[+ Add Product](#)

Pricing

**Invicti Web + API (formerly Acunetix)**
Free Trial

No pricing available

**Tenable Nessus**
Free Trial

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

**$3,790.00** · Pro - 1 Year + Advanced Support

**$4,990.00** 1 License · Expert - 1 Year

**$5,390.00** 1 License · Expert - 1 Year + Advanced Support

Show more

**Pricing Insights**
from reviews

Perceived Cost

**Invicti Web + API (formerly Acunetix)**
$$$$$

**Tenable Nessus**
$$$$$

Average Discount

**Invicti Web + API (formerly Acunetix)**
10%2% more

**Tenable Nessus**
8%

Uncover valuable pricing insights from real user feedback to improve your shopping experience.
See it for free

Time to Implement

**Invicti Web + API (formerly Acunetix)**6 months
Based on 100 responses

**Tenable Nessus** 6 months
Based on 100 responses

Return on Investment

**Invicti Web + API (formerly Acunetix)**6 months
Based on 100 responses

**Tenable Nessus** 6 months
Based on 100 responses

**Pros & Cons**
from reviews

**Invicti Web + API (formerly Acunetix)**
[
Vulnerability Detection (7)
](https://www.g2.com/products/invicti-web-api-formerly-acunetix/reviews?filters%5Bsentiment_snippet%5D=1343195&qs=pros-and-cons#reviews)[
Ease of Use (6)
](https://www.g2.com/products/invicti-web-api-formerly-acunetix/reviews?filters%5Bsentiment_snippet%5D=1343287&qs=pros-and-cons#reviews)[
Expensive (4)
](https://www.g2.com/products/invicti-web-api-formerly-acunetix/reviews?filters%5Bsentiment_snippet%5D=1342950&qs=pros-and-cons#reviews)[
Complexity (3)
](https://www.g2.com/products/invicti-web-api-formerly-acunetix/reviews?filters%5Bsentiment_snippet%5D=2374710&qs=pros-and-cons#reviews)

**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)

Integrations

**Invicti Web + API (formerly Acunetix)**
[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/vendor/image/1199660/large_detail_a5d2a6e37d090bcccf3c728c740eb0cd.png "Product Avatar Image")

Akto

](https://www.g2.com/products/akto-io-akto/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_b3390b4cc3d92e87d570895f7358c003/amazon-api-gateway.jpg "Product Avatar Image")

Amazon API Gateway

](https://www.g2.com/products/amazon-api-gateway/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_c4d135be70728b8934c3b197135af1f5/aqua-security.jpg "Product Avatar Image")

Aqua Security

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

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_2a3c6c39bf8b8eb277cfcd42d9bbca1e/asana.png "Product Avatar Image")

Asana

](https://www.g2.com/products/asana/reviews)[
View all
](https://www.g2.com/products/invicti-web-api-formerly-acunetix/integrations)

**Tenable Nessus**
[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/vendor/image/10784/large_detail_e5444efc9ea5f28707b4aa4de0a3088f.jpeg "Product Avatar Image")

Security Center

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

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

Screenshots

**Invicti Web + API (formerly Acunetix)**
 ![Invicti Web + API (formerly Acunetix) 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/80049/dashboard-04-2x.png)

**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)

**Ratings**
from reviews

Meets Requirements

**Invicti Web + API (formerly Acunetix)**

**8.3** /10

Based on 90 responses

**Tenable Nessus**

**9.0** /10

Based on 264 responses

Ease of Use

**Invicti Web + API (formerly Acunetix)**

**8.5** /10

Based on 91 responses

**Tenable Nessus**

**8.9** /10

Based on 267 responses

Ease of Setup

**Invicti Web + API (formerly Acunetix)**

**8.5** /10

Based on 66 responses

**Tenable Nessus**

**8.8** /10

Based on 189 responses

Ease of Admin

**Invicti Web + API (formerly Acunetix)**

**8.4** /10

Based on 60 responses

**Tenable Nessus**

**8.9** /10

Based on 174 responses

Quality of Support

**Invicti Web + API (formerly Acunetix)**

**7.8** /10

Based on 85 responses

**Tenable Nessus**

**8.4** /10

Based on 244 responses

Has the product been a good partner in doing business?

**Invicti Web + API (formerly Acunetix)**

**8.2** /10

Based on 58 responses

**Tenable Nessus**

**8.7** /10

Based on 162 responses

Product Direction (% positive)

**Invicti Web + API (formerly Acunetix)**

**7.6** /10

Based on 89 responses

**Tenable Nessus**

**8.9** /10

Based on 250 responses

**Features**
ratings from reviews

Vulnerability Scanner

**8.3** /10

Based on 39 responses

**8.4** /10

Based on 174 responses

Website Security

**8.0** /10

Based on 36 responses

Not enough data

Penetration Testing

**7.8** /10

Based on 36 responses

Not enough data

Uncover more feature rated insights from real users to improve your shopping experience.

See it for free

Dynamic Application Security Testing (DAST)

**8.1** /10

Based on 32 responses

Not enough data

Attack Surface Management

Not enough data

**8.4** /10

Based on 7 responses

User Insights

**Reviewers' Company Size**

Small-Business(50 or fewer emp.)
26.0%

Mid-Market(51-1000 emp.)
33.0%

Enterprise(\> 1000 emp.)
41.0%

Small-Business(50 or fewer emp.)
26.0%

Mid-Market(51-1000 emp.)
33.0%

Enterprise(\> 1000 emp.)
41.0%

Small-Business(50 or fewer emp.)
25.4%

Mid-Market(51-1000 emp.)
40.3%

Enterprise(\> 1000 emp.)
34.3%

Small-Business(50 or fewer emp.)
25.4%

Mid-Market(51-1000 emp.)
40.3%

Enterprise(\> 1000 emp.)
34.3%

**Reviewers' Industry**

[![Invicti Web + API (formerly Acunetix)](https://images.g2crowd.com/uploads/product/hd_favicon/8b9bbc1b8758727122569ca626a30959/invicti-web-api-formerly-acunetix.svg "Invicti Web + API (formerly Acunetix)")](https://www.g2.com/products/invicti-web-api-formerly-acunetix/reviews)
Invicti Web + API (formerly Acunetix)

Information Technology and Services
21.0%

Computer Software
15.0%

Computer & Network Security
11.0%

Telecommunications
10.0%

Financial Services
6.0%

Other
37.0%

[![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
25.2%

Computer & Network Security
16.6%

Financial Services
7.0%

Computer Software
5.6%

Banking
5.0%

Other
40.5%

Alternatives

**Invicti Web + API (formerly Acunetix) Alternatives**

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

[
Intruder
](/products/intruder/reviews)

 ![Pentest-Tools.com](https://images.g2crowd.com/uploads/product/hd_favicon/05d143b02714bffe40e07ed33482802f/pentest-tools-com.svg "Pentest-Tools.com")

[
Pentest-Tools.com
](/products/pentest-tools-com/reviews)

 ![Detectify](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_b3060aea2f789d838e7b2fa172ee4fdf/detectify.png "Detectify")

[
Detectify
](/products/detectify/reviews)

 ![Burp Suite](https://images.g2crowd.com/uploads/product/hd_favicon/1084a0792dcd7344d19c56aea015669c/burp-suite.svg "Burp Suite")

[
Burp Suite
](/products/burp-suite/reviews)

**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)

 ![Detectify](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_b3060aea2f789d838e7b2fa172ee4fdf/detectify.png "Detectify")

[
Detectify
](/products/detectify/reviews)

 ![Wiz](https://images.g2crowd.com/uploads/product/hd_favicon/991dbad301661dc9e1b78a7e252252b4/wiz-wiz.svg "Wiz")

[
Wiz
](/products/wiz-wiz/reviews)

## Invicti Web + API (formerly Acunetix) vs Tenable Nessus FAQs

Generated using AI

Last updated: August 14, 2026

### What is the difference between Acunetix by Invicti vs Tenable Nessus?

Tenable Nessus stands out for higher reviewer satisfaction across ratings, support, and setup, while Acunetix by Invicti is noted for its issue tracking and manual testing features.

| | [Acunetix by Invicti](https://www.g2.com/products/acunetix-by-invicti/reviews) | [Tenable Nessus](https://www.g2.com/products/tenable-nessus/reviews) |
| --- | --- | --- |
| G2 Rating (reviews) | 4.1/5 (105 reviews) | 4.5/5 (305 reviews) |
| Largest Segment | Enterprise | Mid-Market |
| Ease of Setup score | 8.5 | 8.8 |
| Quality of Support score | 7.8 | 8.4 |
| Top Reviewer-Cited Strength | Vulnerability Detection (7 all-time mentions) | Vulnerability Identification (20 all-time mentions) |

### How do the pricing models of Acunetix by Invicti and Tenable Nessus compare?

Tenable Nessus is rated higher for value, with a stronger Price/Cost satisfaction score than Acunetix by Invicti.

- **Acunetix by Invicti:** In recent reviews, several buyers cite high and increasing costs, restrictive licensing, and less flexibility for scaling or switching targets.
- **Tenable Nessus:** Reviewers describe the pricing as competitive and within budget, though some note rising costs over time; satisfaction with value remains higher than Acunetix by Invicti.
- **Switching reasons:** Recent Acunetix by Invicti reviewers mention switching due to aggressive price increases and inflexible licensing.

### What are the best alternatives to Acunetix by Invicti and Tenable Nessus?

The top three alternatives to Acunetix by Invicti and Tenable Nessus are Intruder, Detectify, and Invicti.

| Product | G2 Rating (reviews) | Top Reviewer-Cited Strength |
| --- | --- | --- |
| [Acunetix by Invicti](https://www.g2.com/products/acunetix-by-invicti/reviews) | 4.1/5 (105 reviews) | Vulnerability Detection |
| [Tenable Nessus](https://www.g2.com/products/tenable-nessus/reviews) | 4.5/5 (305 reviews) | Vulnerability Identification |
| [Intruder](https://www.g2.com/products/intruder/reviews) | 4.8/5 (209 reviews) | — |
| [Detectify](https://www.g2.com/products/detectify/reviews) | 4.5/5 (51 reviews) | — |
| [Invicti](https://www.g2.com/products/invicti/reviews) | 4.5/5 (72 reviews) | — |

### Which Dynamic Application Security Testing (DAST) features should I prioritize when comparing Acunetix by Invicti and Tenable Nessus?

Buyers should prioritize vulnerability detection accuracy, ease of use, integration capabilities, reporting quality, and automation when comparing Acunetix by Invicti and Tenable Nessus.

- **Vulnerability Detection Accuracy:** Acunetix by Invicti (7 all-time mentions), Tenable Nessus (18 all-time mentions).
- **Ease of Use:** Acunetix by Invicti (8.5/10), Tenable Nessus (8.9/10); all-time mentions: Acunetix by Invicti (6), Tenable Nessus (16).
- **Integration Capabilities:** Acunetix by Invicti (3 all-time mentions), Tenable Nessus (—).
- **Reporting Quality:** Acunetix by Invicti (4 all-time mentions), Tenable Nessus (—).
- **Automation:** Acunetix by Invicti (4 all-time mentions), Tenable Nessus (6 all-time mentions).

### What are the pros and cons of Acunetix by Invicti vs Tenable Nessus?

Tenable Nessus is strongest in vulnerability identification and ease of use, while Acunetix by Invicti is noted for vulnerability detection and integration capabilities.

- **Acunetix by Invicti strengths:** Vulnerability Detection (7 all-time mentions), Ease of Use (6), Security (5), Automation (4), Easy Integrations (4), Implementation Ease (4), Reporting Quality (4).
- **Acunetix by Invicti trade-offs:** Expensive (4), Complexity (3), Complex Setup (3), Slow Scanning (3), Difficult Customization (2).
- **Tenable Nessus strengths:** Vulnerability Identification (20), Vulnerability Detection (18), Ease of Use (16), Automated Scanning (15), Features (13), User Interface (13), Security (9), Scanning Technology (7), Automation (6), Customer Support (5).
- **Tenable Nessus trade-offs:** Slow Scanning (7), Expensive (6), Limited Features (6), Complexity (5), False Positives (5).

### Is Acunetix by Invicti or Tenable Nessus better for small businesses?

Tenable Nessus is the better fit for small businesses, with a larger share of mid-market and small-business reviewers and higher satisfaction scores.

- **Acunetix by Invicti:** Largest segment is Enterprise; reviewers in smaller organizations cite higher costs and licensing inflexibility as challenges.
- **Tenable Nessus:** Largest segment is Mid-Market; reviewers highlight ease of use, competitive pricing, and suitability for smaller teams.

### Which Dynamic Application Security Testing (DAST) platform has better integrations?

Acunetix by Invicti is favored for integrations, with reviewers citing integration capabilities and specific third-party tool support.

- **Acunetix by Invicti:** Jira integration mentioned in recent reviews; integration capabilities cited in 3 all-time reviews.
- **Tenable Nessus:** No specific third-party integrations cited in recent reviews.

### How do Acunetix by Invicti and Tenable Nessus compare on customer support?

Tenable Nessus outperforms Acunetix by Invicti on Quality of Support by more than 0.2 points, with scores of 8.4 vs 7.8.

- **Acunetix by Invicti:** Reviewers report mixed support experiences, with some citing slow or unresponsive support and others noting helpful responses for technical queries.
- **Tenable Nessus:** Reviewers consistently describe support as responsive, helpful, and quick to resolve issues.

### Which is easier to implement, Acunetix by Invicti or Tenable Nessus?

Tenable Nessus has a higher Ease of Setup score (8.8 vs 8.5), indicating it is easier to implement than Acunetix by Invicti.

- **Acunetix by Invicti:** Reviewers note that setup can be complex for first-time users, with some citing resource-intensive scans and configuration challenges.
- **Tenable Nessus:** Reviewers highlight straightforward deployment, intuitive interface, and quick initial setup, especially for standard scans.

### Which product has better False Positives?

Tenable Nessus is rated better for minimizing False Positives, with reviewers citing a lower false positive rate and more accurate results.

- **Acunetix by Invicti:** False positives are mentioned in several reviews, with some noting the need for manual verification; no all-time count provided.
- **Tenable Nessus:** False Positives cited in 5 all-time reviews; recent reviewers highlight low false positive rates and accurate vulnerability detection.