# Rexsser vs VulnSign Dynamic Application Security Testing: side-by-side comparison (2026) [Rexsser](https://cybersectools.com/tools/rexsser) is a free [dynamic application security testing](https://cybersectools.com/categories/dast) solution. [VulnSign Dynamic Application Security Testing](https://cybersectools.com/tools/vulnsign-dynamic-application-security-testing) is a commercial [dynamic application security testing](https://cybersectools.com/categories/dast) solution by [VulnSign](https://cybersectools.com/companies/vulnsign). Features, integrations, deployment and the company behind each one, side by side. 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 | VulnSign Dynamic Application Security Testing | |---|---|---| | Pricing model | Free | Commercial | | Category | Dynamic Application Security Testing | Dynamic Application Security Testing | | Verified | No | No | | Deployment type | On-Premises | Cloud | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | GitHub stars | 75 | – | | Last commit | Nov 2020 | – | | Company | – | VulnSign | | Headquarters | – | – | ### Use cases and capabilities | | Rexsser | VulnSign Dynamic Application Security Testing | |---|---|---| | Open Source | Yes | – | | XSS | Yes | Yes | | XSS Scanner | Yes | – | | Regex | Yes | – | | CI/CD | – | Yes | | DAST | – | Yes | | OWASP | – | Yes | | SQL Injection | – | Yes | | Web Security | – | Yes | ### Core features **Rexsser** No features listed. **VulnSign Dynamic Application Security Testing** 10 features listed. Sign in on the page to see them. ### Integrations **Rexsser** No integrations listed. **VulnSign Dynamic Application Security Testing** 9 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. - [VulnSign Dynamic Application Security Testing](https://cybersectools.com/tools/vulnsign-dynamic-application-security-testing) fits if you want a cloud product. ## Rexsser vs VulnSign Dynamic Application Security Testing FAQ Common questions when comparing Rexsser vs VulnSign Dynamic Application Security Testing for dynamic application security testing. ### What is the difference between Rexsser and VulnSign Dynamic Application Security Testing? **Rexsser**: A Burp Suite plugin that extracts keywords from HTTP responses using regex patterns and tests for reflected XSS vulnerabilities within the target scope. **VulnSign Dynamic Application Security Testing**: DAST tool for scanning web apps, microservices, and APIs for vulnerabilities, built by VulnSign. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Rexsser and VulnSign Dynamic Application Security Testing? **Rexsser** is open-source with 75 GitHub stars. **VulnSign Dynamic Application Security Testing** is made by VulnSign. 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 VulnSign Dynamic Application Security Testing? Often, yes. Rexsser and VulnSign Dynamic Application Security Testing are both Dynamic Application Security Testing products, and both cover XSS. Key differences: Rexsser is Free while VulnSign Dynamic Application Security Testing is Commercial, Rexsser is open-source. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Rexsser vs Halo Security Application Scanning](https://cybersectools.com/compare/halo-security-application-scanning-vs-rexsser) - [Rexsser vs Acunetix Web Application & API Security](https://cybersectools.com/compare/acunetix-web-application-and-api-security-vs-rexsser) - [Rexsser vs Tenable One Web App Scanning](https://cybersectools.com/compare/rexsser-vs-tenable-web-app-scanning) - [VulnSign Dynamic Application Security Testing vs Halo Security Application Scanning](https://cybersectools.com/compare/halo-security-application-scanning-vs-vulnsign-dynamic-application-security-testing) - [VulnSign Dynamic Application Security Testing vs Acunetix Web Application & API Security](https://cybersectools.com/compare/acunetix-web-application-and-api-security-vs-vulnsign-dynamic-application-security-testing) - [VulnSign Dynamic Application Security Testing vs Tenable One Web App Scanning](https://cybersectools.com/compare/tenable-web-app-scanning-vs-vulnsign-dynamic-application-security-testing) ## Alternatives to each - [See all Rexsser alternatives](https://cybersectools.com/alternatives/rexsser) - [See all VulnSign Dynamic Application Security Testing alternatives](https://cybersectools.com/alternatives/vulnsign-dynamic-application-security-testing) --- Source: https://cybersectools.com/compare/rexsser-vs-vulnsign-dynamic-application-security-testing 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 VulnSign Dynamic Application Security Testing: 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