# c/side vs DOMPurify: side-by-side comparison (2026)

[c/side](https://cybersectools.com/tools/cside) is a commercial [runtime application self-protection](https://cybersectools.com/categories/rasp) solution by [C/side](https://cybersectools.com/companies/cside). [DOMPurify](https://cybersectools.com/tools/dompurify) is a free [runtime application self-protection](https://cybersectools.com/categories/rasp) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | c/side | DOMPurify |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Runtime Application Self-Protection | Runtime Application Self-Protection |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 16,746 |
| Last commit | – | Mar 2026 |
| Company | C/side | – |
| Headquarters | – | – |

### Use cases and capabilities

| | c/side | DOMPurify |
|---|---|---|
| Browser Security | Yes | – |
| Third Party Security | Yes | – |
| Web Security | Yes | – |
| Bot Protection | Yes | – |
| Content Security Policy | Yes | – |
| Node.js | – | Yes |
| XSS | – | Yes |

### Core features

**c/side**

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

**DOMPurify**

No features listed.

### Integrations

**c/side**

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

**DOMPurify**

No integrations listed.

## Which one fits you

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

- [DOMPurify](https://cybersectools.com/tools/dompurify) fits if you are a startup, you need a free product and you want an open-source product.

## c/side vs DOMPurify FAQ

Common questions when comparing c/side vs DOMPurify for runtime application self-protection.

### What is the difference between c/side and DOMPurify?

**c/side**: Client-side platform securing browser scripts, detecting fraud & ensuring PCI compliance. Built by C/side.

**DOMPurify**: DOMPurify is a fast XSS sanitizer for HTML, MathML, and SVG.

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

### Who makes c/side and DOMPurify?

**c/side** is made by C/side. **DOMPurify** is open-source with 16,746 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is c/side a good alternative to DOMPurify?

Often, yes. c/side and DOMPurify are both Runtime Application Self-Protection products. Key differences: c/side is Commercial while DOMPurify is Free, DOMPurify is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [c/side vs Source Defense How it works](https://cybersectools.com/compare/source-defense-how-it-works-vs-cside)
- [c/side vs Aikido Zen](https://cybersectools.com/compare/aikido-zen-vs-cside)
- [c/side vs Source Defense Platform](https://cybersectools.com/compare/cside-vs-source-defense-platform)
- [DOMPurify vs Source Defense How it works](https://cybersectools.com/compare/dompurify-vs-source-defense-how-it-works)
- [DOMPurify vs Aikido Zen](https://cybersectools.com/compare/aikido-zen-vs-dompurify)
- [DOMPurify vs Source Defense Platform](https://cybersectools.com/compare/dompurify-vs-source-defense-platform)

## Alternatives to each

- [See all c/side alternatives](https://cybersectools.com/alternatives/cside)
- [See all DOMPurify alternatives](https://cybersectools.com/alternatives/dompurify)

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Source: https://cybersectools.com/compare/cside-vs-dompurify

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

More on c/side and DOMPurify: 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