# Rexsser vs Tenable One Web App Scanning: side-by-side comparison (2026)

[Rexsser](https://cybersectools.com/tools/rexsser) is a free [dynamic application security testing](https://cybersectools.com/categories/dast) solution. [Tenable One Web App Scanning](https://cybersectools.com/tools/tenable-web-app-scanning) is a commercial [dynamic application security testing](https://cybersectools.com/categories/dast) solution by [Tenable](https://cybersectools.com/companies/tenable). Features, integrations, deployment and the company behind each one, side by side.

## Our take

What our shortlists say about the one we picked.

### [Tenable One Web App Scanning](https://cybersectools.com/tools/tenable-web-app-scanning)

Best for: Teams already using Tenable for vulnerability scanning

It belongs here because it adds web app testing to the Tenable products many teams already use for vulnerability scanning, so web findings sit next to the rest. It fits teams of any size already on Tenable One or Security Center. Its listed integrations are all Tenable products, so if you want a scan on every release, ask how it connects to your CI/CD pipeline and ticketing.

From [Best DAST Solutions for Business](https://cybersectools.com/shortlists/best-dast-solutions), Fall 2026.

Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about).

Need the answer fast? [Best DAST Solutions for Business](https://cybersectools.com/shortlists/best-dast-solutions) picks PortSwigger Burp Suite DAST, Invicti DAST, Rapid7 InsightAppSec and 4 more.

## Side-by-side comparison

| | Rexsser | Tenable One Web App Scanning |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Dynamic Application Security Testing | Dynamic Application Security Testing |
| Verified | No | No |
| Deployment type | On-Premises | Hybrid |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| GitHub stars | 75 | – |
| Last commit | Nov 2020 | – |
| Company | – | Tenable |
| Headquarters | – | – |

### Use cases and capabilities

| | Rexsser | Tenable One Web App Scanning |
|---|---|---|
| Open Source | Yes | – |
| XSS | Yes | – |
| XSS Scanner | Yes | – |
| Regex | Yes | – |
| CI/CD | – | Yes |
| DAST | – | Yes |
| OWASP | – | Yes |
| Web Security | – | Yes |

### Core features

**Rexsser**

No features listed.

**Tenable One Web App Scanning**

10 features listed. Sign in on the page to see them.

### Integrations

**Rexsser**

No integrations listed.

**Tenable One Web App Scanning**

7 integrations listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Rexsser](https://cybersectools.com/tools/rexsser) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.
- [Tenable One Web App Scanning](https://cybersectools.com/tools/tenable-web-app-scanning) fits if you need both cloud and on-premises options.

## Rexsser vs Tenable One Web App Scanning FAQ

Common questions when comparing Rexsser vs Tenable One Web App Scanning for dynamic application security testing.

### What is the difference between Rexsser and Tenable One Web App Scanning?

**Rexsser**: A Burp Suite plugin that extracts keywords from HTTP responses using regex patterns and tests for reflected XSS vulnerabilities within the target scope.

**Tenable One Web App Scanning**: DAST solution for web apps and APIs with automated scanning capabilities, built by Tenable.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Rexsser and Tenable One Web App Scanning?

**Rexsser** is open-source with 75 GitHub stars. **Tenable One Web App Scanning** is made by Tenable. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Rexsser a good alternative to Tenable One Web App Scanning?

Often, yes. Rexsser and Tenable One Web App Scanning are both Dynamic Application Security Testing products. Key differences: Rexsser is Free while Tenable One Web App Scanning is Commercial, Rexsser is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Rexsser vs VulnSign Dynamic Application Security Testing](https://cybersectools.com/compare/rexsser-vs-vulnsign-dynamic-application-security-testing)
- [Rexsser vs ImmuniWeb® Neuron](https://cybersectools.com/compare/immuniwebr-neuron-vs-rexsser)
- [Rexsser vs AppCheck SPA Scanner](https://cybersectools.com/compare/appcheck-spa-scanner-vs-rexsser)
- [Tenable One Web App Scanning vs VulnSign Dynamic Application Security Testing](https://cybersectools.com/compare/tenable-web-app-scanning-vs-vulnsign-dynamic-application-security-testing)
- [Tenable One Web App Scanning vs ImmuniWeb® Neuron](https://cybersectools.com/compare/immuniwebr-neuron-vs-tenable-web-app-scanning)
- [Tenable One Web App Scanning vs AppCheck SPA Scanner](https://cybersectools.com/compare/appcheck-spa-scanner-vs-tenable-web-app-scanning)

## Alternatives to each

- [See all Rexsser alternatives](https://cybersectools.com/alternatives/rexsser)
- [See all Tenable One Web App Scanning alternatives](https://cybersectools.com/alternatives/tenable-web-app-scanning)

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Source: https://cybersectools.com/compare/rexsser-vs-tenable-web-app-scanning

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/rexsser.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Rexsser and Tenable One Web App Scanning: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md