# CovertSwarm Vulnerability Scanning Services vs Nessus Professional: side-by-side comparison (2026) [CovertSwarm Vulnerability Scanning Services](https://cybersectools.com/tools/covertswarm-vulnerability-scanning-services) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [CovertSwarm](https://cybersectools.com/companies/covertswarm). [Nessus Professional](https://cybersectools.com/tools/nessus-professional) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Tenable](https://cybersectools.com/companies/tenable). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | CovertSwarm Vulnerability Scanning Services | Nessus Professional | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Vulnerability Assessment | Vulnerability Assessment | | Verified | No | No | | Deployment type | Cloud | On-Premises | | Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | CovertSwarm | Tenable | | Headquarters | – | – | ### Use cases and capabilities | | CovertSwarm Vulnerability Scanning Services | Nessus Professional | |---|---|---| | Vulnerability | – | Yes | | Security Scanning | – | Yes | | CVE | – | Yes | | Penetration Testing Framework | – | Yes | | NIST | – | Yes | | PCI DSS | – | Yes | | CIS | – | Yes | | Network Scanning | – | Yes | | VAPT | – | Yes | ### Core features **CovertSwarm Vulnerability Scanning Services** 10 features listed. Sign in on the page to see them. **Nessus Professional** 10 features 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. - [CovertSwarm Vulnerability Scanning Services](https://cybersectools.com/tools/covertswarm-vulnerability-scanning-services) fits if you want a cloud product. - [Nessus Professional](https://cybersectools.com/tools/nessus-professional) fits if you need to run it on your own servers and you are a startup. ## CovertSwarm Vulnerability Scanning Services vs Nessus Professional FAQ Common questions when comparing CovertSwarm Vulnerability Scanning Services vs Nessus Professional for vulnerability assessment. ### What is the difference between CovertSwarm Vulnerability Scanning Services and Nessus Professional? **CovertSwarm Vulnerability Scanning Services**: Vulnerability scanning service using ethical hackers to identify weaknesses. Built by CovertSwarm. **Nessus Professional**: Vulnerability scanner for assessing networks, systems, and apps for security flaws. Built by Tenable. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes CovertSwarm Vulnerability Scanning Services and Nessus Professional? **CovertSwarm Vulnerability Scanning Services** is made by CovertSwarm. **Nessus Professional** 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 CovertSwarm Vulnerability Scanning Services a good alternative to Nessus Professional? Often, yes. CovertSwarm Vulnerability Scanning Services and Nessus Professional are both Vulnerability Assessment products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [CovertSwarm Vulnerability Scanning Services vs Webray RayScan](https://cybersectools.com/compare/covertswarm-vulnerability-scanning-services-vs-webray-rayscan) - [CovertSwarm Vulnerability Scanning Services vs Positive Technologies XSpider PRO](https://cybersectools.com/compare/covertswarm-vulnerability-scanning-services-vs-positive-technologies-xspider-pro) - [CovertSwarm Vulnerability Scanning Services vs Tripwire IP360](https://cybersectools.com/compare/covertswarm-vulnerability-scanning-services-vs-tripwire-ip360) - [Nessus Professional vs Webray RayScan](https://cybersectools.com/compare/nessus-professional-vs-webray-rayscan) - [Nessus Professional vs Positive Technologies XSpider PRO](https://cybersectools.com/compare/nessus-professional-vs-positive-technologies-xspider-pro) - [Nessus Professional vs Tripwire IP360](https://cybersectools.com/compare/nessus-professional-vs-tripwire-ip360) ## Alternatives to each - [See all CovertSwarm Vulnerability Scanning Services alternatives](https://cybersectools.com/alternatives/covertswarm-vulnerability-scanning-services) - [See all Nessus Professional alternatives](https://cybersectools.com/alternatives/nessus-professional) --- Source: https://cybersectools.com/compare/covertswarm-vulnerability-scanning-services-vs-nessus-professional For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/covertswarm-vulnerability-scanning-services.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on CovertSwarm Vulnerability Scanning Services and Nessus Professional: 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