# Quad9 vs Whalebone: side-by-side comparison (2026)

[Quad9](https://cybersectools.com/tools/quad9) is a free [intrusion detection and prevention systems](https://cybersectools.com/categories/idps) solution. [Whalebone](https://cybersectools.com/tools/whalebone) is a commercial [intrusion detection and prevention systems](https://cybersectools.com/categories/idps) solution by [Whalebone](https://cybersectools.com/companies/whalebone). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Quad9 | Whalebone |
|---|---|---|
| Pricing model | Free | Commercial |
| Category | Intrusion Detection and Prevention Systems | Intrusion Detection and Prevention Systems |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | – | Whalebone |
| Headquarters | – | – |

### Use cases and capabilities

| | Quad9 | Whalebone |
|---|---|---|
| DNS Security | Yes | – |
| Network Protection | – | Yes |
| Content Filtering | – | Yes |
| Traffic Filtering | – | Yes |
| Critical Infrastructure | – | Yes |
| 5G | – | Yes |

### Core features

**Quad9**

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

**Whalebone**

7 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.

- [Quad9](https://cybersectools.com/tools/quad9) fits if you are a startup and you need a free product.

## Quad9 vs Whalebone FAQ

Common questions when comparing Quad9 vs Whalebone for intrusion detection and prevention systems.

### What is the difference between Quad9 and Whalebone?

**Quad9**: A free DNS recursive service that blocks malicious host names and protects user privacy.

**Whalebone**: DNS-based cybersecurity platform for telcos, ISPs, enterprises & govts. Built by Whalebone.

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

### Is Quad9 a good alternative to Whalebone?

Often, yes. Quad9 and Whalebone are both Intrusion Detection and Prevention Systems products. Key differences: Quad9 is Free while Whalebone is Commercial. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Quad9 vs threatER](https://cybersectools.com/compare/quad9-vs-threater)
- [Quad9 vs Axiom Cyber HakTrap](https://cybersectools.com/compare/axiom-cyber-haktrap-vs-quad9)
- [Quad9 vs Centripetal CleanINTERNET®](https://cybersectools.com/compare/centripetal-cleaninternetr-vs-quad9)
- [Whalebone vs threatER](https://cybersectools.com/compare/threater-vs-whalebone)
- [Whalebone vs Axiom Cyber HakTrap](https://cybersectools.com/compare/axiom-cyber-haktrap-vs-whalebone)
- [Whalebone vs Centripetal CleanINTERNET®](https://cybersectools.com/compare/centripetal-cleaninternetr-vs-whalebone)

## Alternatives to each

- [See all Quad9 alternatives](https://cybersectools.com/alternatives/quad9)
- [See all Whalebone alternatives](https://cybersectools.com/alternatives/whalebone)

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Source: https://cybersectools.com/compare/quad9-vs-whalebone

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/quad9.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Quad9 and Whalebone: 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