# Capture The Bug PTaaS vs RsaCtfTool: side-by-side comparison (2026)

[Capture The Bug PTaaS](https://cybersectools.com/tools/capture-the-bug-ptaas) is a commercial [penetration testing](https://cybersectools.com/categories/pentesting-tools) solution by [Capture The Bug](https://cybersectools.com/companies/capture-the-bug). [RsaCtfTool](https://cybersectools.com/tools/rsactftool) is a free [penetration testing](https://cybersectools.com/categories/pentesting-tools) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Capture The Bug PTaaS | RsaCtfTool |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Penetration Testing | Penetration Testing |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Startup, SMB |
| GitHub stars | – | 6,830 |
| Last commit | – | Mar 2026 |
| Company | Capture The Bug | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Capture The Bug PTaaS | RsaCtfTool |
|---|---|---|
| Penetration Testing Framework | Yes | – |
| Continuous Testing | Yes | – |
| VAPT | Yes | – |
| Web Security | Yes | – |
| Cloud Native | Yes | – |
| GDPR | Yes | – |
| OWASP | Yes | – |
| Security Reporting | Yes | – |
| Security Compliance Training | Yes | – |
| CTF | – | Yes |
| Education | – | Yes |

### Core features

**Capture The Bug PTaaS**

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

**RsaCtfTool**

No features listed.

### Integrations

**Capture The Bug PTaaS**

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

**RsaCtfTool**

No integrations listed.

## Which one fits you

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

- [Capture The Bug PTaaS](https://cybersectools.com/tools/capture-the-bug-ptaas) fits if you want a cloud product and you are a mid-market company or an enterprise.
- [RsaCtfTool](https://cybersectools.com/tools/rsactftool) fits if you need to run it on your own servers, you need a free product and you want an open-source product.

## Capture The Bug PTaaS vs RsaCtfTool FAQ

Common questions when comparing Capture The Bug PTaaS vs RsaCtfTool for penetration testing.

### What is the difference between Capture The Bug PTaaS and RsaCtfTool?

**Capture The Bug PTaaS**: CREST-certified PTaaS platform for continuous web, API, and cloud pentesting, built by Capture The Bug.

**RsaCtfTool**: A utility that attempts to decrypt data from weak RSA public keys and recover private keys using multiple integer factorization algorithms.

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

### Who makes Capture The Bug PTaaS and RsaCtfTool?

**Capture The Bug PTaaS** is made by Capture The Bug. **RsaCtfTool** is open-source with 6,830 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Capture The Bug PTaaS a good alternative to RsaCtfTool?

Often, yes. Capture The Bug PTaaS and RsaCtfTool are both Penetration Testing products. Key differences: Capture The Bug PTaaS is Commercial while RsaCtfTool is Free, RsaCtfTool is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Capture The Bug PTaaS vs Strike Human-Led Pentesting](https://cybersectools.com/compare/capture-the-bug-ptaas-vs-strike-human-led-pentesting)
- [Capture The Bug PTaaS vs HackerHub8 VAPT](https://cybersectools.com/compare/capture-the-bug-ptaas-vs-hackerhub8-vapt)
- [Capture The Bug PTaaS vs Plainsea Agentic Penetration Testing Platform](https://cybersectools.com/compare/capture-the-bug-ptaas-vs-plainsea-agentic-penetration-testing-platform)
- [RsaCtfTool vs Strike Human-Led Pentesting](https://cybersectools.com/compare/rsactftool-vs-strike-human-led-pentesting)
- [RsaCtfTool vs HackerHub8 VAPT](https://cybersectools.com/compare/hackerhub8-vapt-vs-rsactftool)
- [RsaCtfTool vs Plainsea Agentic Penetration Testing Platform](https://cybersectools.com/compare/plainsea-agentic-penetration-testing-platform-vs-rsactftool)

## Alternatives to each

- [See all Capture The Bug PTaaS alternatives](https://cybersectools.com/alternatives/capture-the-bug-ptaas)
- [See all RsaCtfTool alternatives](https://cybersectools.com/alternatives/rsactftool)

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Source: https://cybersectools.com/compare/capture-the-bug-ptaas-vs-rsactftool

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

More on Capture The Bug PTaaS and RsaCtfTool: 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