# Filigran OpenCTI vs Threat Bus: 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). [Threat Bus](https://cybersectools.com/tools/threat-bus) 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 | Threat Bus |
|---|---|---|
| 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 | Mid-Market, Enterprise |
| GitHub stars | – | 270 |
| Last commit | – | May 2022 |
| Company | Filigran | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Filigran OpenCTI | Threat Bus |
|---|---|---|
| Case Management | Yes | – |
| MITRE ATT&CK | Yes | – |
| Open Source | Yes | Yes |
| RBAC | Yes | – |
| STIX | Yes | – |
| Cyber Threat Intelligence | Yes | Yes |
| Security Tools | – | Yes |

### Core features

**Filigran OpenCTI**

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

**Threat Bus**

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 and you are a small business.
- [Threat Bus](https://cybersectools.com/tools/threat-bus) fits if you need to run it on your own servers, you need a free product and you want an open-source product.

## Filigran OpenCTI vs Threat Bus FAQ

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

### What is the difference between Filigran OpenCTI and Threat Bus?

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

**Threat Bus**: A threat intelligence dissemination layer for open-source security tools with STIX-2 support and plugin-based architecture.

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

### Who makes Filigran OpenCTI and Threat Bus?

**Filigran OpenCTI** is made by Filigran. **Threat Bus** is open-source with 270 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 Threat Bus?

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

## Related comparisons

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

## Alternatives to each

- [See all Filigran OpenCTI alternatives](https://cybersectools.com/alternatives/filigran-opencti)
- [See all Threat Bus alternatives](https://cybersectools.com/alternatives/threat-bus)

---

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

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 Threat Bus: 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