OWASP Threat Dragon
- Android app
- Not listed
- Free plan
- Yes
- Runs on
- Linux, Mac, self-hosted, Web, Windows
Summary
OWASP Threat Dragon is a threat-modeling tool for developers and defenders. It creates diagrams and records threats associated with diagram elements, supporting work within a secure development lifecycle. Diagrams can show processes, data stores, actors, data flows and trust boundaries. Users can work with STRIDE, LINDDUN, CIA, CIA-DIE, DIE and PLOT4ai threat categories, while a rule engine can suggest threats and mitigations based on diagram properties. Threat Dragon is available as a desktop app for Windows, macOS and Linux, or as a containerized, self-hosted web application. The web version supports local file storage and configurable access to several code hosting and file services; the desktop app stores models locally. It is free and open source under Apache License 2.0. Analytics are disabled by default and require server configuration. The project is volunteer-maintained and notes that immediate investigation or response to incidents may not always be possible.
Who it is for
Threat Dragon is intended for developers and defenders, including both experienced threat modelers and beginners. It suits teams that want to create threat diagrams and use supported threat categories and suggestions.
What is good
- Free and open source under Apache License 2.0.
- Supports six listed threat-category frameworks.
- Rule engine can suggest threats and mitigations.
- Available as desktop or self-hosted web application.
- Analytics are disabled by default.
What to know first
- Immediate incident investigation or response may not always be possible.
- Web integrations require configuration.
Verdict
Threat Dragon offers diagramming and threat suggestions in desktop and self-hosted web forms. Its volunteer maintenance means immediate incident response is not guaranteed.
OWASP Threat Dragon plans and pricing
All plansCompared on threat modeling software
- Free plan
- Yesthreatdragon.com
- Risk prioritization
- Yesthreatdragon.com
- Templates and frameworks
- Yesthreatdragon.com
- Modeling methods
- multiplethreatdragon.com
- Deployment
- self_hostedthreatdragon.com
Facts
- Purpose
- Threat Dragon creates threat model diagrams and lists threats for diagram elements as part of a secure development lifecycle.owasp.org · 3 Oct 2026
- Threat frameworks
- It supports STRIDE, LINDDUN, CIA, CIA-DIE, DIE and PLOT4ai threat categories.threatdragon.com · 3 Oct 2026
- Threat suggestions
- A rule engine can suggest threats and mitigations, including context-specific suggestions based on diagram element properties.threatdragon.com · 3 Oct 2026
- Diagrams
- Diagrams can include processes, data stores, actors, data flows and trust boundaries.threatdragon.com · 3 Oct 2026
- Storage and integrations
- The web app supports local file storage and configurable access to GitHub, GitHub Enterprise, Google Drive, Bitbucket, Bitbucket Enterprise and GitLab; the desktop app saves models locally.threatdragon.com · 3 Oct 2026
- Desktop platforms
- Desktop installers are provided for Windows, macOS and Linux.threatdragon.com · 3 Oct 2026
- License
- The OWASP project page lists the license as Apache License 2.0.owasp.org · 3 Oct 2026
- Security practices
- The project says its repository enforces signed commits, supply-chain actions use full-length SHAs, and desktop releases are signed and notarized where possible.threatdragon.com · 3 Oct 2026
- Security testing
- The project says automated dependency, SAST, DAST and container security scans run on every commit.threatdragon.com · 3 Oct 2026
- Privacy
- Analytics are disabled by default, require server configuration, and do not collect threat model content or usernames for Plausible.threatdragon.com · 3 Oct 2026
- Support
- The project directs users to its mailing list, OWASP Slack channel, GitHub issues and public discussions for questions, bugs and feature requests.owasp.org · 3 Oct 2026
- Maintenance limitation
- The project is maintained by volunteers and says immediate investigation or response to incidents is not always possible.threatdragon.com · 3 Oct 2026
- Intended users
- OWASP describes Threat Dragon as intended for developers and defenders, and says both experienced threat modelers and beginners can use it.owasp.org · 3 Oct 2026
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Sources
- owasp.org/projects/threat-dragon· checked 3 Oct 2026
- threatdragon.com/docs/· checked 3 Oct 2026
- threatdragon.com/docs/usage/threats.html· checked 3 Oct 2026
- threatdragon.com/docs/usage/diagrams.html· checked 3 Oct 2026
- threatdragon.com/docs/trust/trust.html· checked 3 Oct 2026
- threatdragon.com/docs/trust/analytics.html· checked 3 Oct 2026