Password protect applications

You would need to apply parental controls to your account from within another account. You would also need to make your account managed and not an administrator account, but you could selectively disallow access to the programs you desire to be passworded, and then every time you opened them you would be prompted to enter the password of the second account you created.

 

Not that I know of. Wouldn't it be easier just to create a new account rather than having to enter a password every time you tried to load an application? And that does nothing to prevent an attacker from using an application that's already running. Not sure exactly what you're intending to do here, but there must be an easier way.

 

You can create a sparse image with a password in Disk Utility and throw the apps in there. Then when you want to run the apps you mount the image, put in the password, and run the apps.