# Filigran OpenCTI vs libtaxii: side-by-side comparison (2026)

[Filigran OpenCTI](https://cybersectools.com/tools/filigran-opencti) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [Filigran](https://cybersectools.com/companies/filigran). [libtaxii](https://cybersectools.com/tools/libtaxii) is a free [threat intel platforms](https://cybersectools.com/categories/tip) solution. Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Threat Intelligence Platform Solutions for Business](https://cybersectools.com/shortlists/best-threat-intelligence-platforms) picks Recorded Future Threat Intelligence, Google Threat Intelligence, CrowdStrike Falcon Adversary Intelligence and 4 more.

## Side-by-side comparison

| | Filigran OpenCTI | libtaxii |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Threat Intel Platforms | Threat Intel Platforms |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 73 |
| Last commit | – | Apr 2021 |
| Company | Filigran | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Filigran OpenCTI | libtaxii |
|---|---|---|
| Case Management | Yes | – |
| MITRE ATT&CK | Yes | – |
| Open Source | Yes | Yes |
| RBAC | Yes | – |
| STIX | Yes | – |
| Cyber Threat Intelligence | Yes | Yes |
| XML | – | Yes |
| TAXII | – | Yes |

### Core features

**Filigran OpenCTI**

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

**libtaxii**

No features listed.

## Which one fits you

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

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

## Filigran OpenCTI vs libtaxii FAQ

Common questions when comparing Filigran OpenCTI vs libtaxii for threat intel platforms.

### What is the difference between Filigran OpenCTI and libtaxii?

**Filigran OpenCTI**: Open-source threat intelligence platform for organizing and operationalizing CTI. Built by Filigran.

**libtaxii**: A Python library for handling TAXII v1.x messages and services to enable automated threat intelligence sharing and indicator exchange.

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

### Who makes Filigran OpenCTI and libtaxii?

**Filigran OpenCTI** is made by Filigran. **libtaxii** is open-source with 73 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Filigran OpenCTI a good alternative to libtaxii?

Often, yes. Filigran OpenCTI and libtaxii are both Threat Intel Platforms products, and both cover Open Source, Cyber Threat Intelligence. Key differences: Filigran OpenCTI is Commercial while libtaxii is Free, libtaxii is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Filigran OpenCTI vs EclecticIQ Intelligence Center](https://cybersectools.com/compare/eclecticiq-intelligence-center-vs-filigran-opencti)
- [Filigran OpenCTI vs ThreatBook Advanced Threat Intelligence (ATI)](https://cybersectools.com/compare/filigran-opencti-vs-threatbook-advanced-threat-intelligence-ati)
- [Filigran OpenCTI vs Group-IB Threat Intelligence Platform](https://cybersectools.com/compare/filigran-opencti-vs-group-ib-threat-intelligence-platform)
- [libtaxii vs EclecticIQ Intelligence Center](https://cybersectools.com/compare/eclecticiq-intelligence-center-vs-libtaxii)
- [libtaxii vs ThreatBook Advanced Threat Intelligence (ATI)](https://cybersectools.com/compare/libtaxii-vs-threatbook-advanced-threat-intelligence-ati)
- [libtaxii vs Group-IB Threat Intelligence Platform](https://cybersectools.com/compare/group-ib-threat-intelligence-platform-vs-libtaxii)

## Alternatives to each

- [See all Filigran OpenCTI alternatives](https://cybersectools.com/alternatives/filigran-opencti)
- [See all libtaxii alternatives](https://cybersectools.com/alternatives/libtaxii)

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Source: https://cybersectools.com/compare/filigran-opencti-vs-libtaxii

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

More on Filigran OpenCTI and libtaxii: 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