ThreatModeler Nexus vs ThreatTree

ThreatModeler Nexus is an agentic platform for secure design and governed threat modeling across applications, cloud and hybrid architectures, devices, and operational technology. Its Secure Design Graph connects architectures, threats, controls, compliance requirements, and security decisions. System Mapping, Graph, and Reporting agents operate on that graph. Supported methods include STRIDE, PASTA, and CSA MAESTRO for agentic systems, and findings map to more than 180 regulatory and security frameworks, including NIST, ISO 27001, PCI DSS, HIPAA, DORA, and the EU AI Act. A built-in MCP Server checks pull requests and commits against the current threat model and returns threats, requirements, and mitigations in developer workflows. Integrations include infrastructure tools, cloud providers, code platforms, ServiceNow, and ArmorCode. Customers can connect their own AI model, with a deterministic framework governing output. Web, API, and self-hosted environments are listed. A free Community Edition is available; the ThreatModeler license costs $4,000 a year on a 12-month contract. Additional AWS infrastructure costs may apply.

ThreatTree is a browser-based tool for organizing threat models into forests of Data Flow Diagrams and Attack Trees. It scores risks by likelihood and impact, then generates a ranked risk register across the trees in a forest. Threats can be tagged with STRIDE, LINDDUN, OWASP Top 10, CAPEC, and MITRE ATT&CK; mitigations can be mapped to standards including ISO 27001:2022, NIST SP 800-53 Rev 5, CIS Controls v8, PCI DSS v4.0, NIST CSF 2.0, and SOC 2. Teams can invite members with owner, editor, or viewer roles. Reports are available as PDFs, with JSON and STIX 2.1 exports. Optional per-forest AES-256-GCM encryption is available on every plan, including Free. ThreatTree says data is stored on UK servers, connections use TLS 1.2 or higher, and encrypted database backups are taken daily and retained for 30 days. The Free plan costs nothing and has limits on forests and trees. Pro costs $29 a month per user, billed monthly; Enterprise pricing is by quote.