If you are have some important programs installed in your computer that you don't one anyone but your self to use it due to security reason, locking it would be an ideal solution. PCBooster Free App Lock enables you to lock any applications or programs instantly. You can use your own password to block others using your apps. Once locked, the person trying to access your programs need the correct password to unlock it; or else they will stay inaccessible. PCBooster Free App Lock allows locking as many programs as you want. This password protection software features the function of password protection for itself that gives users double safeguard. It uses executable code encryption that prevents start-up or uninstall of this free exe lock without the correct password. It is a good assistant for parents to lock any EXE programs of computer games & online games like World of War craft, League of Legends, Call of Duty, etc. to protect your kids from game addiction. It also has the ability to lock your Media Players like WMP, RealPlayer, KMPlayer, etc. to prevent others to peek the played media files, and password protect your web browsers to keep your privacy, important bank password used on the internet safe. PCBooster Free App Lock equips with 2 encryption modes: Speed priority mode & Security priority mode to guarantee the speed of encryption & safety of you EXE files. It's up to you to choose which one! The backup function offers an extra security for you in case some unexpected errors occur during encrypting. Furthermore, for convenience, this free exe lock software lets you add the item "Encrypt with Free App Lock" into Right-click menu to encrypt your .exe files swift.