SafeSquid Personal is a free 3 USER Content Filtering Proxy Server for Windows.
SafeLogon is a nice, trial version Windows program, belonging to the category Security software with subcategory Blockers & Access Control (more specifically PC Access Control).
Rohos Logon Key
If you don't trust passwords to protect your computer, you should take a look at Rohos Logon Key.
Raise My Rights
Raise My Rights, enables limited user accounts to run certain programs as Administrator or any other user.
Radius elearning software
Radius elearning software is a server based software enable the licensee to setup an elearning framework either as an Appliccation Sharing Model or a fullfledged server.
Protect EXE offers a simple yet effective way of blocking access to any given application: it sets a password to the EXE file and asks for it every time you want to run the file.
Prot-On is an application that allows you to protect, manage and track the use of all kinds of files that are shared on the Internet, by e-mail or through a cloud service.
Phrozen Windows File Monitor
Phrozen Windows File Monitor is a standalone program designed to capture any kind of modification inside the file system of Microsoft Windows.
PC TimeWatch is a popular, trial version Windows software, that belongs to the category Security software with subcategory Blockers & Access Control (more specifically PC Access Control) and has been created by Mainsoft.
PC-Time Manager is considered a parental control software that limits computer time.
PC Restrictor is designed to quickly give an administrator a high level of control over personal computers running the Windows 95/98 operating system.
PC Monitor Expert
PC Monitor Expert is a professional PC monitoring utility for completely monitoring an object computer.