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

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.

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.

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.