# Backline vs Semperis Purple Knight: side-by-side comparison (2026)

[Backline](https://cybersectools.com/tools/backline) is a commercial [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Backline](https://cybersectools.com/companies/backline). [Semperis Purple Knight](https://cybersectools.com/tools/semperis-purple-knight) is a free [vulnerability assessment](https://cybersectools.com/categories/vulnerability-assessment) solution by [Semperis](https://cybersectools.com/companies/semperis). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Backline | Semperis Purple Knight |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Vulnerability Assessment | Vulnerability Assessment |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Backline | Semperis |
| Headquarters | – | – |

### Use cases and capabilities

| | Backline | Semperis Purple Knight |
|---|---|---|
| Agentic AI Security | Yes | – |
| Vulnerability Prioritization | Yes | – |
| Vulnerability | Yes | – |
| AI Copilot | Yes | – |
| Patch Management | Yes | – |
| DevSecOps | Yes | – |
| Generative AI | Yes | – |
| Security Scanning | Yes | – |
| Workflow | Yes | – |
| Active Directory | – | Yes |
| Misconfiguration | – | Yes |

### Core features

**Backline**

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

**Semperis Purple Knight**

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.

- [Semperis Purple Knight](https://cybersectools.com/tools/semperis-purple-knight) fits if you are a startup and you need a free product.

## Backline vs Semperis Purple Knight FAQ

Common questions when comparing Backline vs Semperis Purple Knight for vulnerability assessment.

### What is the difference between Backline and Semperis Purple Knight?

**Backline**: AI agent platform automating vuln interpretation, prioritization, fixing & validation. Built by Backline.

**Semperis Purple Knight**: Free AD, Entra ID, and Okta security assessment tool for vulnerability scanning. Built by Semperis.

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

### Who makes Backline and Semperis Purple Knight?

**Backline** is made by Backline. **Semperis Purple Knight** is made by Semperis. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Backline a good alternative to Semperis Purple Knight?

Often, yes. Backline and Semperis Purple Knight are both Vulnerability Assessment products. Key differences: Backline is Commercial while Semperis Purple Knight is Free. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Backline vs Furl Platform](https://cybersectools.com/compare/backline-vs-furl-platform)
- [Backline vs Spektion](https://cybersectools.com/compare/backline-vs-spektion)
- [Backline vs Lyrie Remedy — AI Auto-Fix for Vulnerabilities](https://cybersectools.com/compare/backline-vs-lyrie-remedy-ai-auto-fix-for-vulnerabilities)
- [Semperis Purple Knight vs Furl Platform](https://cybersectools.com/compare/furl-platform-vs-semperis-purple-knight)
- [Semperis Purple Knight vs Spektion](https://cybersectools.com/compare/semperis-purple-knight-vs-spektion)
- [Semperis Purple Knight vs Lyrie Remedy — AI Auto-Fix for Vulnerabilities](https://cybersectools.com/compare/lyrie-remedy-ai-auto-fix-for-vulnerabilities-vs-semperis-purple-knight)

## Alternatives to each

- [See all Backline alternatives](https://cybersectools.com/alternatives/backline)
- [See all Semperis Purple Knight alternatives](https://cybersectools.com/alternatives/semperis-purple-knight)

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Source: https://cybersectools.com/compare/backline-vs-semperis-purple-knight

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

More on Backline and Semperis Purple Knight: 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