Most Popular Freeware on GRC.COM (via Mowser)

Our Growing Collection of High-Quality, Super-Small and
Super-Fast, Freely Downloadable Programs & Resources
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GRC Project Chronology: A complete listing of my past, present, and probable future projects — presented in the order of their occurrence — may be found in the Projects section of "Steve's page".

Daily Average Count of files downloaded from this page: 3,969

Total Historical Count of files downloaded from this page: 26,845,379

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SecurAble
Display processor's security features.

Quickly determine, display, and explore the availability and consequences of the state-of-the-art security-related features available in the system's processor.

Last Updated:
Size: 115k Jan 14, 2007 at 11:14
(1,861.53 days ago) Downloads/day: 1,478
Total downloads: 2,225,964 Current Rank: 1
Historical Rank: 5

DNSBench
Advanced DNS Benchmark utility.

Compare the performance and reliablity of your system's currently configured DNS servers to many publicly available alternatives.

Last Updated:
Size: 163k Sep 30, 2010 at 15:58
(506.33 days ago) Downloads/day: 980
Total downloads: 521,991 Current Rank: 2
Historical Rank: 10

UnPlug n' Pray
Universal Plug & Play management

At the end of 2001, Microsoft revealed a critical defect in Windows XP and ME: Windows' Universal Plug and Play service (UPnP) would allow a malicious hacker to remotely take over any system that was running and exposing the UPnP service to the Internet. This UnPlug n' Pray utility lets anyone check for the presence of the dangerous UPnP service in their system, then easily and safely enable and disable it as needed.

Last Updated:
Size: 22k Dec 28, 2001 at 14:47
(3,704.38 days ago) Downloads/day: 401
Total downloads: 3,152,477 Current Rank: 3
Historical Rank: 2

LeakTest
Personal firewall leakage tester

When LeakTest was released, most personal firewalls were easily fooled. Any malicious program could give itself the same name as a trusted program to gain access to the Internet. LeakTest demonstrates and tests for this simple application "masquerading" vulnerability.

Last Updated:
Size: 25k Jul 10, 2005 at 09:54
(2,414.59 days ago) Downloads/day: 374
Total downloads: 7,636,165 Current Rank: 4
Historical Rank: 1

SpinRite 5.0: What it Does
How SpinRite performs its magic

This "What SpinRite does" technical note describes SpinRite's many unique technologies and explains why SpinRite is every bit as useful and necessary today (though for very different reasons) as it was when I first wrote it.

Last Updated:
Size: 191k Mar 29, 1998 at 22:07
(5,074.08 days ago) Downloads/day: 158
Total downloads: 400,949 Current Rank: 5
Historical Rank: 11

Wizmo
Steve's multipurpose Windows gizmo

Wizmo is a multipurpose miscellaneous Windows utility that provides an array of single-click functions that are missing from Windows. Triggered by a single mouse click, it can do things like power down your system's displays, activate your screen saver, change or mute the audio volume, restart, reboot, or shutdown your system, and much more. It even includes a rather cool built-in "Graviton" screen saver that simulates the motion of any number of mutually gravitationally attracted celestial objects. Check out Wizmo's web page for the current (and growing) complete list of Wizmo's capabilities and features.

Last Updated:
Size: 38k Jun 25, 2008 at 12:25
(1,333.48 days ago) Downloads/day: 91
Total downloads: 1,106,975 Current Rank: 6
Historical Rank: 8

ClicKey
Give your keyboard a bit of sound

A simple little utility to add a user-specifiable 'click' sound to any Windows keyboard.

Last Updated:
Size: 42k Oct 29, 2005 at 10:32
(2,303.56 days ago) Downloads/day: 82
Total downloads: 132,116 Current Rank: 7
Historical Rank: 21

Shoot The Messenger
Simple Messenger Service Disable/Enable

Windows NT, 2000, and XP hide an hidden Internet server that is running by default. It receives and accepts, among other things, unsolicited network messages that cause pop-up dialog boxes to appear on the desktop. Internet Spammers have discovered this and are spraying pop-up Spam across the Internet. The Windows Messenger server should never have been running by default, and Microsoft has finally fixed that in Windows 2003, but users of previous Windows need to take responsibility for this themselves.

Last Updated:
Size: 22k Apr 26, 2003 at 06:52
(3,220.71 days ago) Downloads/day: 72
Total downloads: 2,346,722 Current Rank: 8
Historical Rank: 4

DCOMbobulator
Tame Windows insecure DCOM facility

Ever since Windows 98, a powerful, but unnecessary and rarely used facility known as DCOM (Distributed Component Object Model) has been an integral part of Windows. The DCOMbobulator checks the effectiveness of Microsoft's security patches and allows the user to increase the security of their system by simply turning DCOM off.

Last Updated:
Size: 29k May 24, 2004 at 13:17
(2,826.45 days ago) Downloads/day: 64
Total downloads: 1,804,256 Current Rank: 9
Historical Rank: 6

SpinRite 5.0 Owner's Guide
SpinRite's operation manual

This is SpinRite's owners guide which all SpinRite owners should download and print. However, this manual is oriented toward getting the job done, which is fine once you own SpinRite. SpinRite's "What it Does" Technical Note is a much better guide to understanding SpinRite's functions, operation, and benefits.

Last Updated:
Size: 163k Jan 20, 2012 at 12:39
(29.47 days ago) Downloads/day: 51
Total downloads: 305,443 Current Rank: 10
Historical Rank: 13

ID Serve
Internet server identification utility

Can your favorite web sites be trusted with your personal and confidential financial and other data? With eCommerce activity growing, malicious hackers are becoming more interested in breaking into Internet servers. But many servers are not secure. This utility helps you to easily determine which Internet servers web sites are using.

Last Updated:
Size: 26k Aug 26, 2003 at 20:56
(3,098.13 days ago) Downloads/day: 45
Total downloads: 915,019 Current Rank: 11
Historical Rank: 9

MouseTrap
Check your system for MICE!

Quickly check your Windows systems for the presence of potentially dangerous MICE: Metafile Image Code Execution.

Last Updated:
Size: 29k Jan 19, 2006 at 02:39
(2,221.89 days ago) Downloads/day: 31
Total downloads: 247,205 Current Rank: 12
Historical Rank: 14

SpinRite 5.0 Literature
Description of SpinRite features

In the old days before the Internet, product literature was often printed and mailed through the postal system. Although our SpinRite web pages provide similar information, this printable SpinRite literature PDF file provides a nice four-page summary of SpinRite's operation and features.

Last Updated:
Size: 43k Jan 20, 2012 at 12:39
(29.47 days ago) Downloads/day: 22
Total downloads: 194,553 Current Rank: 13
Historical Rank: 16

SpinRite 5.0 Addendum
Updates to SpinRite's owner's guide

Important operational notes and feature enhancements for owners of SpinRite 5.0 covering improvements and features added since SpinRite 3.1.

Last Updated:
Size: 32k Jan 20, 2012 at 12:39
(29.47 days ago) Downloads/day: 19
Total downloads: 144,352 Current Rank: 14
Historical Rank: 20

OptOut (retired & obsolete)
The original spyware removal tool

My discovery that "Aureate/Radiate" advertising spyware had been installed in tens of millions of PCs without their owners' knowledge or permission led me to create OptOut, the first spyware removal tool. When the Lavasoft folks created the much more comprehensive Ad-Aware freeware, I turned spyware policing over to them. This file remains on our site only because so many off-site web links still point to it.

Last Updated:
Size: 9k Mar 02, 2001 at 23:00
(4,005.04 days ago) Downloads/day: 19
Total downloads: 3,020,993 Current Rank: 15
Historical Rank: 3

FIX-CIH Virus Recovery
Total recovery from CIH virus damage

Every April, the CIH virus resurfaces and wipes out thousands of hard disk drives by deliberately zeroing their partition, boot, and FAT tables. The first time this happened I wrote this complete post-CIH hard drive recovery utility.

Last Updated:
Size: 21k Jan 24, 2002 at 10:29
(3,677.56 days ago) Downloads/day: 14
Total downloads: 319,936 Current Rank: 16
Historical Rank: 12

Free & Clear Font Demo
Sub-pixel font rendering demo

A sub-pixel font rendering demonstration illustrating the technology of splitting LCD pixels for the purpose of enhancing font readability. The details are described on our Free & Clear web site pages.

Last Updated:
Size: 23k Apr 03, 2000 at 12:48
(4,338.47 days ago) Downloads/day: 10
Total downloads: 157,883 Current Rank: 17
Historical Rank: 19

IDentify ASPI Devices
Simple ASPI device display utility

ID checks the visibility of peripheral devices to aid in the diagnosis of ASPI driver problems. Devices shown by ID are visible to the ASPI driver layer and, if they are Iomega drives, can be tested by TIP (Trouble In Paradise).

Last Updated:
Size: 14k Aug 18, 1998 at 21:07
(4,932.12 days ago) Downloads/day: 10
Total downloads: 191,567 Current Rank: 18
Historical Rank: 17

XPdite
Crucial Windows XP Vulnerability Fixer

Windows XP has always contained an extremely serious vulnerability which allows any malicious hacker to cause the files contained in any directory to be deleted. This vulnerability can be cured by installing XP's large (50 to 140 MB) Service Pack 1 — which is preferable whenever possible. But this free and lightweight XPdite utility fixes the problem quickly and easily for systems not yet running Service Pack 1. A silent running option also makes it ideal for corporate deployment.

Last Updated:
Size: 30k Sep 17, 2002 at 09:22
(3,441.61 days ago) Downloads/day: 10
Total downloads: 1,122,845 Current Rank: 19
Historical Rank: 7

Small Is Beautiful (SIB)
Windows assembly language starter kit

I write all of my Windows and other utilities in 100% pure assembly language. This results in the smallest, fastest, and most efficient programs possible. I created the "Small is Beautiful" kit to help interested assembly language programmers get started writing Windows programs in pure assembly language.

Last Updated:
Size: 20k Nov 17, 1996 at 20:11
(5,571.16 days ago) Downloads/day: 8
Total downloads: 233,604 Current Rank: 20
Historical Rank: 15

MouseTrapCmd
Check your system for MICE!

A command-line version of MouseTrap, to quickly check your Windows systems for the presence of potentially dangerous MICE: Metafile Image Code Execution.

Last Updated:
Size: 15k Jan 19, 2006 at 02:41
(2,221.89 days ago) Downloads/day: 6
Total downloads: 36,867 Current Rank: 21
Historical Rank: 26

NoShare
Quick and simple NetBIOS disabler

When the ShieldsUP! system was first created, I had not discovered how to safely "rebind" network transports as a means for closing the NetBIOS TCP/IP vulnerabilities. So I wrote the LetShare & NoShare utilities to do this quickly and easily (although in a non-standard fashion). Today, the manual rebinding described on the ShieldsUP! pages is the preferred method. LetShare & NoShare still work and can be useful for allowing quick NetBIOS on/off testing.

Last Updated:
Size: 6k Jan 19, 2002 at 21:54
(3,682.09 days ago) Downloads/day: 6
Total downloads: 184,570 Current Rank: 22
Historical Rank: 18

ASPI_ME Media Demo
Demo of on-the-fly audio synthesis

A small executable demonstration that synthesizes a complex polyphonic sound, using a software FM synthesizer, while unscrambling a sliding tile puzzle. After the puzzle is solved, the resulting wave file is played.

Last Updated:
Size: 14k Aug 10, 1999 at 23:01
(4,575.04 days ago) Downloads/day: 5
Total downloads: 101,930 Current Rank: 23
Historical Rank: 24

LetShare
Quick and simple NetBIOS enabler

Last Updated:
Size: 6k Jan 19, 2002 at 21:55
(3,682.09 days ago) Downloads/day: 5
Total downloads: 122,691 Current Rank: 24
Historical Rank: 22

Perfect Paper Passwords
GRC's Open, Secure, Remote Authentication System

This ZIP file contains the PPP.DLL and PPP.EXE which fully implement the CryptoSystem for GRC's Perfect Paper Passwords, one-time password (OTP) remote Internet service authentication system. These files may be freely used to implement identical or similar authentication systems and they are provided for that purpose.

Last Updated:
Size: 24k Feb 10, 2008 at 15:16
(1,469.36 days ago) Downloads/day: 5
Total downloads: 16,580 Current Rank: 25
Historical Rank: 27

Click of Death Audio #1
David Hellier introduces himself

During a live telephone conversation with Leo Laporte on TechTV's Screensavers program, Iomega spokesman David Hellier introduces himself.

Last Updated:
Size: 77k Jun 28, 1998 at 11:12
(4,983.53 days ago) Downloads/day: 3
Total downloads: 112,153 Current Rank: 26
Historical Rank: 23

Click of Death Audio #2
David Hellier's free replacement promise

During a live telephone conversation with Leo Laporte on TechTV's Screensavers program, Iomega spokesman David Hellier promises to replace ANY defective IOmega ZIP or JAZ drives whether or not they are still in warranty.

Last Updated:
Size: 69k Jun 28, 1998 at 11:07
(4,983.54 days ago) Downloads/day: 3
Total downloads: 89,573 Current Rank: 27
Historical Rank: 25

Gibson Research Corporation is owned and operated by Steve Gibson. The contents
of this page are Copyright (c) 2012 Gibson Research Corporation. SpinRite, ShieldsUP,
NanoProbe, and any other indicated trademarks are registered trademarks of Gibson
Research Corporation, Laguna Hills, CA, USA. GRC's web and customer privacy policy.

Last Edit: Feb 19, 2012 at 00:00 (0.41 days ago) Viewed 509 times per day

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