Leithauser Research


    Windows shareware computer software for computer security, computer access control, Internet safety, Internet monitoring, business applications, productivity, recreation, and education. Leithauser Research creates quality shareware for Windows. Most of these programs can be downloaded directly from this page by clicking on the EXE file name. In some cases, you must view a more detailed description of the program and see additional download options by clicking on the "Click Here" link at the end of the description on this page or on the program name itself.
    The software programs on this page fall into three basic categories: Computer security, business and personal productivity, and recreational and educational. If you are interested in a particular field, please go directly to that area below.
    You may try these programs for a period of either 10 or 30 days (depending on the program) without paying for them. If, at the end of the trial period, you decide that you wish to continue using the program, you can do so by paying the registration fee to obtain the unlock code. Information on paying the registration fee is provided by the program. If you decide you do not want to continue using the software, it can be uninstalled.

  You can securely pay the registration fee for these programs online using PayPal. 
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Click here for Leithauser Research contact information


Shareware Programs for Computer Security and access control

Web Site Zapper (wszarc.exe) - A Windows   Internet security program that gives you control over what Web pages can be viewed on your computer, allowing you to control Web access. Web Site Zapper will block Web sites by redirecting and then closing down Web browsers that are showing undesirable sites, providing you with Internet access control. You can either create a list of undesirable sites (including broad descriptions like any site containing "gambling" in the title or URL) or create a list of allowed sites (like your business sites) that you want to allow people access to. Web Site Zapper is useful in business to prevent employees from surfing the Web on company time and at home to protect children from hazardous sites. For more information, click here.

Internet Password Lock (iplarc.exe) - A Windows (does not work on 95/98/Me/NT) Internet security program that will block Internet access (Web, email, Instant Messaging, etc.) until you input a password. You can either completely lock Internet access, or you can selectively disable specific Internet functions such as Web surfing, email, or Instant Messaging. This allows you to restrict Internet access. This is useful for parents to protect their children by controlling their Internet access. It is also useful for businesses to control Internet use by employees. This can save money by preventing employees from wasting time on the Internet when they should be working. For more information, click here.

Clock Guard (cgarc.exe) - A Windows  computer security program that will lock your computer clock to prevent you from changing the computer time without a password. This can be important to prevent employee theft of time at companies that have time clock programs that keep track of when employees start and stop work. A surprising number of these programs have no way of stopping the employees from changing the computer clock before punching in or out. It can also be important for parents who have software on their computers to restrict when the children can use the computer, since some of this software has no protection against the children simply changing the system clock. For more information, click here.

Software Time Lock (stlarc.exe) - Computer security program. Allows you to block access to the Web, individual programs, or the entire computer during selected time periods for each day of the week. Also allows you to control for how long the Internet, individual programs, or the computer itself can be used in total for each day of the week. You can use this program to protect children from harmful information on the Internet, or for security in a business to prevent unauthorized use of the computer outside of business hours. For more information, click here.

Computer Payment Enforcer (cpearc.exe) is a computer program that helps you to collect payments for computers that you have sold on credit or are renting out. Installed on a computer you are selling or leasing, it will lock down the computer when payments are overdue. In order to unlock the computer, the person must input a payment code, which you supply once they have made their payment. For more information, click here.

Password Shield (pwsarc.exe) let you give people (such as your employees) access to secure sites without actually giving them the passwords. Employees can input a password by clicking on a site name from a list in Password Shield, but never see the password. Password Shield also records who accesses what sites and when. For more information, click here.

Settings Lock (slarc.exe) is a software program for Windows computers that allows you to password protect 14 Windows settings and functions. These settings are: The computer clock time and date, System Restore, Video display properties, such as wallpaper and screen saver (called Display Personalization in Vista), Internet Options, Add/Remove Programs (called Programs and Features in Vista), User Accounts, Windows Security Center, System Properties, Add Hardware Wizard, Network Connects and Setup Wizard (called Network and Sharing Center in Vista), Properties of individual files (such as read-only), Task Manager, Windows Explorer and My Computer folder options. For more information, click here.

Drive Blocker (dbarc.exe) is a computer security program for Windows XP computers. It disables and blocks access to removable drives, such as flash drives, and removable media, such as CD's or floppies. Prevent theft of sensitive company data and installation of unauthorized software on company computers. Reduces virus infections.  For more information, click here.

Program Sentry (prsenarc.exe) - Computer security program. This allows you to either create a list of prohibited programs or a list of allowed programs. Any program that is on the prohibited list or is not on the allowed list is blocked from running. Each program can also be password protected to allow you to unblock the program. Provides access control and usage management for your computer. Allows restrictions on which programs people use. Useful in home or business to control computer use.  For more information, click here.

Computer Rental Controller (crcarc.exe) - Computer access control program that allows you to easily rent or sell computer time on your computer. Generates a list of passwords, each of which allows access to the computer for a period of time selected by you. You can also set up a list of passwords that provide unlimited time, but have Computer Rental Controller keep track of how much time each password is used for so you can bill people for their computer usage. This is Internet Cafe software or computer kiosk software. For more information on Computer Rental Controller, click here.

Program And Internet Rental Software (PAIRSarc.exe) - Computer access control program that allows you to easily rent or sell access to specific programs or functions (like Internet access) on your computer. Generates a list of passwords, each of which allows access a specific program for a period of time selected by you. You can also set up a list of passwords that provide unlimited time, but have Program and Internet Rental Software keep track of how much time each password is used for each program so you can bill people for their computer usage. Set up your own Internet Cafe or computer kiosk. For more information on Program and Internet Rental Software, click here.

Computer monitoring software - Find out what your employees or children are doing on the computer. One program, Computer Use Reporter, covertly monitors what programs are used on the computer, what files or Web sites these programs access, when they are accessed, and which user is on the computer at the time. Another program, Web Surfer Watcher, monitors and reports what Web sites people go to on the computer. For more information on these programs, click here.

AutoBackup - (aubuarc.exe) - allows you to easily back up critical files. It is particularly useful if you have a specific set of files you need to back up frequently. It is also useful if you simply want to routinely copy certain files to a floppy for transport to another computer. You can input a specific list of files that you want to back up. This list can also include general file masks, such as C:\My Documents\*.* (all files in the "My Documents" folder), when you want to backup up an entire group of files. Once you have selected this list of files and/or file masks, you can easily make backup copies of all these files at the click of a mouse button. You can even tell AutoBackup to automatically back up all your critical files when you exit Windows. Although AutoBackup is particularly useful if you have a specific group of files that need to be backed up regularly, it can also be used as a general backup program. You can tell AutoBackup to simply back up all the files on any drives you select that have changed today, or since any other date you select. For more information, click here.

Disk Change Monitor (dcmarc.exe) - A hard disk monitoring utility for Windows . It automatically records changes in your hard disk files. You can automatically back up any files that have changed or been added to your hard disks. You can also find any changes that might account for any problems you have developed with your system, such as corrupted or missing files. It also allows you to monitor the use of your computer in various ways, including what Web sites have been visited recently and what hours your computer was turned on. This program has a lot of uses. For more information, click here.

File Guardian (fgarc.exe) - A Windows computer security program that protects your files from being changed. File Guardian allows you to specify a list of files you want monitored and how often you want File Guardian to check these files. If File Guardian finds that one of these files has been changed when it performs this check, it will automatically restore the file to original condition. It is particularly useful on Web servers to protect your Web site from being infected with viruses or from being vandalized. It can be used in other applications where you do not want files changed. For more information, click here.

Trojan Slayer  - Protect your computer from Trojans (a common form of computer virus). Trojan Slayer learns what programs belong on your computer, then blocks or eliminates any programs that invade your system. For more information on Trojan Slayer, click here.

Shareware Programs for business and personal productivity

Date Calculator (datecarc.exe) - Performs a variety of calendar related functions useful in business and finance. It will display a calendar for any month of any year. It will calculate the number of days between any two dates, optionally only counting certain days of the week, such as Monday through Friday. It can also calculate the date a certain number of days before or after a given date, again optionally only counting certain user selected days of the week. It can show a perpetual calendar (show any month of any year). For more information, click here.

Serial to Web (s2warc.exe) -  Serial to Web is a Windows program that will automatically post any text that comes in a serial port to a Web page. Although this can have many possible uses, the most common is to post data from an Arduino to a Web page. You may want to do this in order to make the data available to the public, or just to enable you to view the data from anywhere on your cell phone or other Web enabled device. For more information, click here.

Project Deadline Countdown Timer Manager (pdctmarc.exe) - Displays a list of all projects and tasks you are working on, arranged chronologically starting with the one due soonest. Shows how long each one has until it must be completed, updated every minute. Displays project name, status, due date time until due, and an unlimited number of comments that you can attach to each project. After you have deleted a project form the list, it goes into a separate list of completed projects that you can refer to for record keeping. For more information, click here.

Time Difference Calculator (tdcarc.exe) - Calculates the number of hours and minutes between two times and date. Also will calculate the time and date a given number of hours and minutes before or after a given time and date. For more information, click here.

Option Profit Calculator (opcarc.exe) - Calculates transaction and annualized profits and losses from stock and option transactions, in both absolute dollars (or other currency) and as percentages of investment. Easily compare benefits and risks of various possible stock option transactions in the same terms. Click here for more information.

Fast Form Filler (fffarc.exe) - Save time filling out forms. Store names, addresses, passwords, and other phrases, then just click on one of these phrases from the list and then on a Web page text box or program input to instantly input the phrase. For more information on Fast Form Filler, click here.

Information Retriever (irarc.exe) - A simple and easy solution to information retrieval. This program lets you store pieces of data (which can be anything) along with a handle for each one. You can retrieve the data by typing any portion (even a few characters) of the handle. Look up data on people with only a few letters of their names, etc. Retrieved data can be easily cut and pasted or printed. For more information on Information Retriever, click here.

Draw-On-Screen (dosarc.exe) - A simple and easy program that lets you draw on the computer screen with the mouse. This program is useful for people who give presentations by projecting the computer screen for the audience, or just for fun. You can draw arrows, circles, etc on any form you have on the screen for illustration purpose without actually affecting the document. For more information on Draw-On-Screen, click here.

No-Keys for Windows (w32nkarc.exe) - A virtual onscreen keyboard that you can type on using a mouse or track ball. Keys you type are sent to another Windows program selected by you. Allows you to type in word processors, terminal programs, etc. using only a mouse. Designed primarily for people with disabilities who cannot use the keyboard. Can also be used with touch screen computers. For more information on this program, click here.

Countdown Clock (ccarc.exe) is a Windows computer software program that displays a continuous countdown in years, days, hours, minutes and seconds to any event of your choosing. It comes with several built in events, but you can create your own custom events. It also allows you to customize the display colors and font size, and can dock itself to the top of your screen. You can also program in a popup display for the countdown clock to show when the event occurs. For more information on this program, click here.

Word Finder (wfarc.exe) - Word Finder has a list of words in a file. It will find words from that file with characteristics you want, like starting or ending with certain letters, containing or not containing certain letters, having certain lengths, and so on. For more information, click here.

Shareware Programs for recreation and education

 Golf Handicapper for Windows (wgharc.exe) - A Windows program that stores any number of golf scores for any number of players and performs a running golf handicap calculation and net score calculation for each game. For more information, click here. Note: There are now special rules for golf handicapping in Australia that change the formula slightly. Because of this, we have released a special Australian Golf Handicapper version. To download this version, click here. For more information, click here.

 Score Tracker and Team Optimizer for Windows (toarc.exe) - A Windows program that stores any number of scores for any number of players and will put these players together into optimum teams, where either the players are nearly equal within the team (such as a golf foursome) or the total scores between teams are closely matched (for competition between teams). For more information, click here.

Note: If you are interested in being a reseller or distributor of Leithauser Research software, send email to Leithauser@aol.com

    Some additional services of Leithauser Research are listed below.

Custom Programming

    Leithauser Research also does custom programming  for Windows at reasonable prices. If you need a program you cannot find anywhere, or if you have a great idea for a program you want to market but need help writing, contact Leithauser Research for a price quote. Click here for more information, or send email to Leithauser@aol.com.


    Half of all profits from the sales of software from this site are donated to Trees for the Future, a nonprofit organization that plants trees (about 10 trees are planted for each dollar donated). These trees remove carbon dioxide from the air (about one ton per tree), reversing global warming. Since many of the trees are fruit trees, they also provide food to help feed starving people in underdeveloped countries.

    This site does not collect or record information on who views or downloads from this site. If you have any problems or concerns about this site, contact us at Leithauser@aol.com or call 1-386-410-6769 between the hours of 11 AM and 10 PM Eastern USA time.

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