Trike
    
            
                
                    Computer-aided threat modeling
                
            
             
            
             
            
        
            Trike is a platform-independent tool for systematic, computer-assisted threat modeling, from requirements through deployment.
We are developing Trike v2 on GitHub (https://github.com/octotrike/trike).  Our mailing lists are still here on SourceForge, and we're leaving the old code repository & releases up for archival purposes.  Plus you probably want to use something while you're waiting for v2.