There are 3 repositories under attack-trees topic.
Draw.io libraries for threat modeling diagrams
An open-source modular framework capable of identifying a wide range of TLS vulnerabilities and assessing compliance with multiple guidelines. Its actionable report can assist the user in correctly and easily fixing their configurations.
Attack Tree modeling sheet for Dia
Azure DevOps server supply-chain attack tree (map, Attack surface, threat modeling)
Agda formalization of the Attack Tree Linear Logic
A Haskell EDSL for conducting threat analysis using Attack Trees
A Tool that Generates Attack--Defense Trees to Support Threat Modeling Activities
Attack Tree Designer is a Modelio module developed by Softeam that allows Modelio users to design attack tree diagrams.
Threat Modeling with ATT&CK defines how to integreate MITRE ATT&CK® into your organization’s existing threat modeling methodology.
Live editor for DOT language graphs
Implementation of Attack Tree with using object-oriented design patterns. Abstract Factory and Visitor patterns were used for implementation.