Dethernety

Free plan Open source APISelf-hostedWeb

What Dethernety is

Dethernety is an open-source threat modeling platform that represents system architecture as a graph. Teams can build and explore models in a browser, from code, or from reports, then analyze attack paths, blast radius, and residual risk in the context of the architecture. The platform maps exposures to MITRE ATT&CK techniques and controls to D3FEND countermeasures to help identify coverage gaps. Its JavaScript and TypeScript module ecosystem includes design, analysis, and issue modules, alongside an OPA/Rego policy engine. Issue modules can connect to external trackers and synchronize remediation issues in both directions. Users host their own graph database; Neo4j and Memgraph are named options. Analysis can use deterministic queries, single-agent AI assistance, or multi-agent LangGraph workflows. The open-source edition runs on infrastructure users control and can operate fully offline without cloud calls. The maker says models, data, and findings remain on that infrastructure, with no background telemetry or usage data. The GUI is intended for security teams, while the CLI supports DevOps automation and threat-model-as-code. Enterprise edition includes dedicated support and deployment help.

Who it suits

Dethernety is suited to security teams that want to model architecture and examine risks across its connected components. DevOps teams can use its CLI for CI/CD automation and threat-model-as-code, while organizations that want local control can run the open-source edition on their own infrastructure.

What it does well

Build and explore models in a browser, from code, or from reports.
Analyzes attack paths, blast radius, and residual risk.
Maps exposures to MITRE ATT&CK and controls to D3FEND.
Can run fully offline on infrastructure users control.
Issue modules can synchronize remediation with external trackers.

What to know first

Users host and manage their own graph database.
Hosted SaaS is planned for later.
BYODt and BYODt Team are described as coming soon.
Enterprise pricing is by contract, with custom terms.

Plans

Plan	Billed and limits	Price
Open Source	Full platform · self-hosted · bring your own graph database · offline-capable	Free
Enterprise	By contract · Self-hosted · own identity provider · air-gap-friendly · dedicated support	On request
BYODt Team — 5 or 20 seats	Pricing being finalized · 5 or 20 seats · self-hosted · shared package access	On request
Hosted SaaS	Planned later · Per-customer isolated managed deployment · separate network, identity, storage and compute	On request
BYODt	Pricing being finalized · Self-hosted · cloud-served specialized modules · closed-vocabulary attributes only leave your network	On request

As dether.net lists them, read 15 Oct 2026. The maker's own page has the final word.

Getting started

Visit the Dethernety platform website.
Choose the open-source edition for self-hosting.
Set up a graph database you host, such as Neo4j or Memgraph.
Use the browser GUI or CLI to build threat models from architecture, code, or reports.
Select deterministic queries or an available AI analysis workflow.

Verdict

Choose Dethernety if you need graph-based threat modeling with local hosting, architecture-aware analysis, and CLI automation. Organizations seeking a hosted service should note that Hosted SaaS is planned for later; the currently described open-source edition requires self-hosting and a user-hosted graph database.

Questions

Is Dethernety free?

The Open Source plan is listed as free and includes the full platform for self-hosting with a user-provided graph database.

Can Dethernety run offline?

Yes. The open-source edition can run on infrastructure users control and operate fully offline without cloud calls.

Which graph databases can I use?

Neo4j and Memgraph are named options. Users host their own graph database.

Is there a hosted SaaS plan?

Hosted SaaS is planned for later. BYODt and BYODt Team are described as coming soon.

What does the Enterprise edition include?

Enterprise is self-hosted with custom terms, dedicated support, and deployment help. Pricing is by contract.

Does Dethernety offer a free trial?

A free trial is listed.

Facts from Dethernety's own pages

AI analysis: Analysis options include deterministic queries, single-agent AI acceleration, and multi-agent LangGraph workflows. · dether.net, 8 Oct 2026
Analysis engines: Analysis can use deterministic queries, single-agent AI acceleration or multi-agent LangGraph workflows. · dether.net, 15 Oct 2026
Availability limits: BYODt and BYODt Team are described as coming soon, while Hosted SaaS is planned for later; package composition and pricing are still being finalized. · dether.net, 8 Oct 2026
Claude Code integration: The Dethereal Claude Code plugin provides 14 slash commands, 5 specialized agents and 22 MCP tools. · github.com, 15 Oct 2026
CLI workflow: The CLI supports CI/CD automation and threat-model-as-code with version control. · dether.net, 15 Oct 2026
Company founder: Levente Simon is identified as Dethernety's founder and creator, with more than 25 years in strategy, leadership, architecture and software development. · dether.net, 15 Oct 2026
Container quickstart: The BYODt deployment requires Docker with Compose or Podman 4.1 or newer and runs from signed images. · github.com, 15 Oct 2026
Data handling: The maker says models, data, and findings stay on the user's infrastructure; optional cloud evaluations send only closed-vocabulary configuration attributes and discard the payloads. · dether.net, 8 Oct 2026
Deployment prerequisites: The documented source setup requires Node.js 18 or newer, pnpm 9.13 or newer, Neo4j or Memgraph and an OIDC provider. · github.com, 15 Oct 2026
Deterministic analysis: The platform computes exposures, controls and attack paths from the model and links findings to evidence. · dether.net, 15 Oct 2026
Documentation: The repository includes user guides, architecture documentation, configuration guidance, security-model documentation and module-development documentation. · github.com, 15 Oct 2026
Evidence sources: Module findings cite sources including CVE, NIST 800-53, CWE, CIS, MITRE ATT&CK and D3FEND. · dether.net, 15 Oct 2026
File portability: Models can be exported as JSON or split-file ZIPs, versioned with code, edited offline and re-imported. · github.com, 15 Oct 2026
Graph databases: The platform names Neo4j and Memgraph as graph database options, and users host their own graph database. · dether.net, 8 Oct 2026
Graph queries: Attack paths, blast radius and chokepoints are analyzed as graph operations rather than table joins. · dether.net, 15 Oct 2026
Graph storage: Models are stored as graph structures in Neo4j or Memgraph, with components, flows, boundaries and controls represented as nodes and relationships. · github.com, 15 Oct 2026
Independent directory description: Toreon describes Dethernety as a visual graph-native threat-modeling tool that analyzes architectural attack paths and produces MITRE-mapped findings. · github.com, 15 Oct 2026
Independent directory listing: Toreon's threat-modeling directory lists Dethernety as a 2026 personal release by Velnomix, active, AI-capable and AGPL-3.0-only. · github.com, 15 Oct 2026
Integrations: Issue modules can connect with external trackers and sync remediation issues bidirectionally. · dether.net, 8 Oct 2026
Intended users: The maker describes the GUI for security teams and the CLI for DevOps teams, with the CLI supporting CI/CD automation and threat-model-as-code. · dether.net, 8 Oct 2026
Issue management: Findings can create issues and synchronize remediation with external trackers through issue modules. · dether.net, 15 Oct 2026
License: The public repository is licensed GNU Affero General Public License version 3.0, AGPL-3.0-only. · github.com, 15 Oct 2026
Limit: no attacker model: Threat Report says it shows reachability routes but does not model attacker effort, credential reuse or exploit chaining. · dether.net, 15 Oct 2026
Limit: not a live scan: Threat Report explicitly says its coverage is modelled or design-asserted and is not telemetry from a running system. · dether.net, 15 Oct 2026

Where Dethernety stands on Freedom251

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