Internet Password Lock
Internet Password Lock is a software program for Windows 2000/XP/NT computers (does not work on Windows 95/98/Me) that allows you to password protect all access to the Internet. This includes Web surfing, Instant Messaging, and email. Parents can use Internet Password Lock to protect your... To access the Internet, you must view the main Internet Password Lock screen by clicking on the Internet Password Lock icon on the system tray and then input a password (selected by you when you install Internet Password Lock).
http://LeithauserResearch.com/iplarc.exe - 817Kb - Download - Screenshot

Lock Folder XP
Lock Folder XP is a new security tool that lets you lock your files, folders and drives with your personal password. Now nobody but you can access your most sensitive information. Locking folders, files and drives also effectively protects you from malicious programs, such as viruses, worms and... Here is how Lock Folder XP works - all you have to do is to drag file or folder you want to lock to Lock Folder XP window, and the rest is done automatically. ... Lock Folder XP is distributed electronically over the Internet.
http://www.everstrike.com/download/lockfldr.exe - 1Mb - Download - Screenshot

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

4S Lock
4S Lock 1. 07 enables you to lock your workstation at any time by simple double click on system tray icon. Transparent lock is available. 4S Lock also provides startup/logon computer lockdown. During computer startup 4S Lock seamlessly replaces standard windows shell, and switches it back having... Such files as temporary internet files, cookies, internet history, recent documents traces and other files reflecting your working and internet browsing habits are automatically and permanently destroyed upon computer startup or shutdown.
http://www.synaptex.biz/locen/smallwidgets/4S_Lock/4S_Lock.zip - 5Mb - Download - Screenshot

IM Lock Professional
IM Lock is a powerful desktop internet policy software for employers and parents. IM Lock blocks Instant Messengers, P2P Filesharing, Streaming Media Applications, Onling Gaming, Chat Rooms, Blogs, Browsers, and more.
http://www.comvigo.com/downloadIMLock/IMLSetup.exe - 2Mb - Download - Screenshot

WinGuard Pro
Password protect your programs, files and folders for free! Users can add password protection to any Windows program. Two types of file and folder protection, including encryption, provides you with all-in-one solution for protecting your computer from unarthorized access. ... With extra features to lock the desktop, boot keys, task keys, blocking software installations and internet access and Windows Startup. ... Such as the Desktop, My Computer, Internet Access, Internet Downloading, Software Installations and much more.
http://wgp.swmirror.com/wgpro.exe - 592Kb - Download - Screenshot

Colock
What is Colock? In short, Colock is a software based lock for making your software copy protected. By adding just one line of code to source code of your program, you will be able to use powerful copy protection system of Colock. How does it work? In the first run of your program, lock system,... Optional automatic Web Lock system for activating user's program through the Internet transparently. ... Sell your software on Internet easily because of independency of software on distribution media and simple registration system.
http://www.pishgamsoft.com/Colock.zip - 5Mb - Download - Screenshot

LockDown Rx Software
LockDown Rx is a powerful desktop security solution for personal or publicly accessible computers running the Windows 2000/XP or Server 2003 Operating Systems. LockDown Rx's advanced technology prevents users from deleting critical files and applications, making unauthorized changes to the... - Locks applications and Control Panels - Provides internet access security - Disable CD-ROM, Floppy, USB and/or Hard Drive - One-step installation - Multi-account support - Restrict changes to the desktop - Prevent downloading via Internet Explorer - Protect the operating system and computer...
http://www.horizondatasys.com/file...ownloads/Lockdown_Rx_setup360.zip - 836Kb - Download - Screenshot

Personal Firewall
Omniquad Personal Firewall keeps your computer shielded from hackers by blocking all unsolicited network connections and traffic to your computer without hampering your browsing experience. - High ? your computer is fully locked - Medium ? everything closed to Internet hosts and your computer... The Personal Firewall also comes with a feature - Global lock - to immediately shut down all network access, very useful when you suspect your system has been infected with a virus that is using your Internet to spread itself or when you just want to lock your computer.
http://www.omniquad.com/firewall.zip - 9Mb - Download - Screenshot

Dial-Up Lock Me
Dial-Up Lock Millennium Edition is an Internet security and dial-up (RAS) monitoring software that enables to set user-level security for Internet Dial-Up (RAS) connections. Using Dial-Up Lock Me you can limit and monitor incoming and outgoing traffic, limit and monitor time online and set... With Dial-Up Lock Me you can: control and monitor the total amount of connection time as well as the amount of connection time in a given period; control and monitor the total amount of incoming/outgoing traffic as well as the amount of incoming/outgoing traffic in a given period; control access to...
http://www.winutility.com/dulme/download/dulme.zip - 765Kb - Download - Screenshot