AppSTPA is free to use under GPL license, and we just ask to cite our work.
We have two versions, and you can download it in the following links:
Please, cite the following article:
A. Carniel, J. D. M. Bezerra and C. M. Hirata, "An Ontology-Based Approach to Aid STPA Analysis," in IEEE Access, vol. 11, pp. 12677-12697, 2023, doi: 10.1109/ACCESS.2023.3242642.
Please, cite the following article:
A. Carniel, J. de Melo Bezerra and C. Massaki Hirata, "Workflow for Conflict and Reinforcement Identification Based on STPA and STRIDE," in IEEE Access, vol. 13, pp. 5785-5814, 2025, doi: 10.1109/ACCESS.2024.3525002.