OpenCTI Community Edition is a web-based cyber threat intelligence knowledge platform for structuring, storing, organising and visualising information about threats.
It combines technical observables with non-technical intelligence such as attribution, victimology and source material, using a connected knowledge model built around STIX. Analysts can preserve provenance, confidence and temporal context while navigating relationships between entities to turn collected data into reusable knowledge. The repository also contains Enterprise Edition components under a separate licence; this entry covers the Community Edition.
This is free and open source software.
Key Features
- STIX-based data model for representing cyber threat intelligence as linked entities and relationships.
- GraphQL API for querying and integrating platform data.
- Web interface focused on exploring, editing and visualising connected intelligence.
- Connectors for exchanging data with external platforms, feeds and security tools.
- Integration with projects and datasets such as MISP, TheHive and MITRE ATT&CK.
- Import pipelines for bringing external intelligence into the knowledge base.
- Export support including STIX bundles and CSV data.
- Relationship inference to derive additional links from information already stored in the platform.
- Support for user-supplied datasets alongside imported intelligence sources.
- Source tracking so intelligence can retain links to reports, events and other primary material.
- Confidence levels plus first-seen and last-seen information for contextualising observations.
- Connector ecosystem designed to automate collection, enrichment and distribution workflows.
Website: github.com/OpenCTI-Platform/opencti
Support:
Developer: Filigran
License: Apache License 2.0

OpenCTI is written in TypeScript. Learn TypeScript with our recommended free books and free tutorials.
Related Software
| Threat Intelligence Platforms | |
|---|---|
| IntelOwl | Automates enrichment and analysis across a broad range of threat sources |
| OpenCTI | Connects threat data in a searchable intelligence graph |
| MISP | Share and correlate actionable threat intelligence |
| Yeti | Builds richer investigations from indicators, entities and context |
| ThreatDeck | Tracks threat intelligence feeds and surfaces meaningful changes quickly |
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