MacAppBlocker is a simple security app which comes in handy when you're sharing your PC with other users and you wish to prevent them from working with some of your programs. This tool sits quietly on your Menu Bar and requires entering the access password in order to make any alterations to its settings. The program lets you set access rules for any app installed on your Mac. For instance, if a selected tool becomes inactive, you can configure MacAppBlocker to shut it down. Also, you can unblock an application after a certain period of time if it's necessary.
A good aspect about this tool is that it keeps a log with any app access attempts. You can learn at what time and date a user tried to open the blocked program; you can also find out which person attempted to launch the protected app (a feature available for iSight equipped Macs).
An important disadvantage of MacAppBlocker is the fact that it doesn't offer you any solution if you forget the access password. A good thing to do before these type of situation occur is to save the password to a safe destination (for instance, to a hidden folder within your Mac).
To conclude, MacAppBlocker is a helpful program that enables you to restrict the users' access to any app installed on your Mac. The application brings a straightforward interface, lets you add and remove access rules for any app, and comes with a reasonable price.