# Allumetis vs CrowdSec: side-by-side comparison (2026)

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

## Side-by-side comparison

| | Allumetis | CrowdSec |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Intrusion Detection and Prevention Systems | Intrusion Detection and Prevention Systems |
| Verified | No | No |
| Deployment type | On-Premises | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 12,800 |
| Last commit | – | Mar 2026 |
| Company | Allumetis | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Allumetis | CrowdSec |
|---|---|---|
| Brute Force | Yes | – |
| Windows | Yes | – |
| Windows Security | Yes | – |
| Windows Event Logs | Yes | – |
| SMTP | Yes | – |
| Authentication | Yes | – |
| Attack Detection | Yes | – |
| Network Protection | Yes | – |
| Log Management | Yes | – |
| Microsoft | Yes | – |
| Open Source | – | Yes |

### Core features

**Allumetis**

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

**CrowdSec**

No features listed.

### Integrations

**Allumetis**

1 integration listed. Sign in on the page to see them.

**CrowdSec**

No integrations listed.

## Which one fits you

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

- [Allumetis](https://cybersectools.com/tools/allumetis) fits if you need to run it on your own servers.
- [CrowdSec](https://cybersectools.com/tools/crowdsec) fits if you need both cloud and on-premises options, you are a startup, you need a free product and you want an open-source product.

## Allumetis vs CrowdSec FAQ

Common questions when comparing Allumetis vs CrowdSec for intrusion detection and prevention systems.

### What is the difference between Allumetis and CrowdSec?

**Allumetis**: Automated brute-force detection & blocking for on-prem Exchange Server. Built by Allumetis.

**CrowdSec**: CrowdSec is a collaborative behavior detection engine that analyzes system logs to identify and block malicious activities using community-shared threat intelligence.

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

### Who makes Allumetis and CrowdSec?

**Allumetis** is made by Allumetis. **CrowdSec** is open-source with 12,800 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Allumetis a good alternative to CrowdSec?

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

## Related comparisons

- [Allumetis vs Centripetal CleanINTERNET®](https://cybersectools.com/compare/allumetis-vs-centripetal-cleaninternetr)
- [Allumetis vs threatER](https://cybersectools.com/compare/allumetis-vs-threater)
- [Allumetis vs Intrusion Shield](https://cybersectools.com/compare/allumetis-vs-intrusion-shield)
- [CrowdSec vs Centripetal CleanINTERNET®](https://cybersectools.com/compare/centripetal-cleaninternetr-vs-crowdsec)
- [CrowdSec vs threatER](https://cybersectools.com/compare/crowdsec-vs-threater)
- [CrowdSec vs Intrusion Shield](https://cybersectools.com/compare/crowdsec-vs-intrusion-shield)

## Alternatives to each

- [See all Allumetis alternatives](https://cybersectools.com/alternatives/allumetis)
- [See all CrowdSec alternatives](https://cybersectools.com/alternatives/crowdsec)

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Source: https://cybersectools.com/compare/allumetis-vs-crowdsec

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

More on Allumetis and CrowdSec: 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