The CARA FaultTree program may be found as an .exe file here. The file is an .exe-file, but has been renamed to .txt because some computers have filter to prevent .exe-files. Therefore you must do the following:
1. Download and save the file cft-aca.txt to a directory where you want to have the program,
2. Rename the file from cft-aca.txt to cft-aca.exe and run this file. Six new files will be "extracted". (Note that CARA is a Windows program - If you are using a Mac, you have to run the program in a Windows mode)
3. Read the "Tutorial" and start using the program (Press "Caftan.exe")