PC Security
Lock down your system like never before. Exercize total control over your computer with the following security options: Explorer Control, File Lock, Folder Lock, System Lock, Internet Lock, Shortcut/Program Lock, Restricted System, Window Lock, intruder Detection with Alarm, Flexible and... A very powerful and easy to use protection utility.
http://www.tropsoft.com/pcsecurity.exe - 1Mb - Download - Screenshot

1st Screen Lock
1st Screen Lock is a password-protected desktop security utility that lets you lock your desktop with a password on boot, or at the time you are leaving your PC. You can use the built-in spy utility that works in background and enables you to spy on your PC users by fixing all user moves in a... Each user of 1st Screen Lock has its own password used to unlock locked PC. ... Password protection works in such a way that your users are unable to see user statistics, change options, or remove the program itself, they can only unlock PC using their own passwords.
http://www.softheap.com/download/fstlock.zip - 1Mb - Download - Screenshot

Folder Lock
Folder Lock is a fast file-security program that can password-protect, lock, hide and encrypt any number of files, folders, drives, pictures and documents in seconds. Protected files are hidden, undeletable, inaccessible and highly secure. It hides files from kids, friends and co-workers,... Additional Options include Stealth Mode, Hacker Attempt Monitoring, Shred files, AutoLock, Auto Shutdown PC, Lock your PC, Erase PC tracks, 256-bit Blowfish Encryption and Context Menu in Explorer. ... Folder Lock is the most downloaded file-security program in the market today.
http://dl.filekicker.com/nc/file/130083-0M78/folder-lock-rd.exe - 2Mb - Download - Screenshot

Password Protected Lock
Password Protected Lock is an excellent security computer lock you can use to secure your PC and protect your privacy. It is attractive, secure, and very easy to use. It starts automatically with Windows and optionally activates desktop lock with password upon loading. ... This is a password-protected desktop security utility that lets you lock your desktop with a password on boot, or at the time you are leaving your PC. ... Lock uses the Windows multiuser system, but doesn't save its passwords in PWL files!
http://www.softfolder.com/download/pplw.zip - 725Kb - Download - Screenshot

LockItNow!
Let your mobile phone lock and unlock your PC. When LockItNow! detects that you are no longer by your PC it locks it, keeping others from accessing it. When you return your PC is automatically unlocked, ready to be used. No user interaction required! ... Do you have a Bluetooth enabled mobile phone and a Bluetooth enabled PC? ... contains security features, which, when set up, forbid normal users to change the settings in the normal way without passwort or through the registry and disallow exiting and force-exiting the program without passwort input.
http://www.blueshareware.com/files/lockitnow.zip - 3Mb - Download - Screenshot

Access Lock
Access Lock is an easy-to-use system-tray security utility you can use to secure your desktop when you are away from your computer. Just configure the program, define a password and double click the Access Lock system-tray icon every time you need to disable and hide your desktop. ... Access Lock enables you to lock your PC by two methods. ... You will find the program interface very easy to negotiate. ... Excellent online help is available. ... It also prevents unauthorized access on boot and allows people around to leave messages while the system is locked.
http://www.getfreefile.com/download/lock.zip - 867Kb - Download - Screenshot

Lock My PC
These days, computers are everywhere: from banks and government offices to shops and homes. We tend to rely on our machines more and more each day. We store our valuable data, personal and business-critical information, photos, credit card information, important phone numbers and vast amount of... Lock My PC is fully customizable: from custom lock screen image to security level settings ? ... Lock My PC by FSPro Labs, is a unique one-click system locking software that ensures no one but you can access your private data when you leave your computer unattended.
http://www.fspro.net/download/lmpc.zip - 1,005Kb - Download - Screenshot

1 Click & Lock
1Click & Lock up is a system tray security utility you can use to secure your desktop when you step away from your PC. It's secure and very easy-to-use. Just define a password, and select Lock to hide and deny access to your desktop to anyone without the proper password. ... When enabled, SecureIt Pro even allows visitors to your PC to leave messages for you. ... You can set the program to launch automatically with Windows, lock your desktop from the system tray, log access attempts, and apply a custom background image.
http://www.softstack.com/download/1cllock.zip - 865Kb - Download - Screenshot

Access Controller
Access Controller is a desktop locking security utility you can use to protect your desktop when you are not near your PC. To activate protection, define a password in Options, and select the Lock command. Password protection can be automatically activated on boot or with a click of an icon in... Access Controller gives you two locking methods: with hiding your desktop and using a screen saver; and without hiding to allow others to see what is happening on your desktop. ... The second method is good for showrooms where you need to demonstrate something to your customers.
http://www.pc-safety.com/download/ac.zip - 806Kb - Download - Screenshot

The Lock XP
The Lock XP provides user audit, access control, Internet and system security for any computer running Windows 95 to Windows XP (with Fast User Switching [also supports Terminal Server Connections]), and now supports Windows Server 2003. The Lock XP is PL-1 compliant to Chapter 8, NISPOM. ... When used in conjunction with the Lock XP Security Manager, all remote systems may be kept up to date when The Lock XP has been updated on the Security Manager system. ... Tools are included with the Security Manager that will allow remote monitoring of any systems running The Lock XP and connecting...
http://www.crashcoursesoftware.com/files/lockxp.zip - 14Mb - Download - Screenshot