Our Growing Collection of High-Quality, Super-Small and
Super-Fast, Freely Downloadable Programs & Resources

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SpinRite 6.0: With TechTV's Leo Laporte!
TechTV legend Leo Laporte and I recently spent
10 minutes on his Call For Help show examining
how and why SpinRite provides early warning of
impending hard disc disasters, how it prevents
trouble, and recovers lost data if it is not used
until it's nearly too late.

This 10-minute video provides a good
overview and a sense for many of SpinRite
6.0's features and benefits.  Check it out!

Listed by Current Popularity

    

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:  5,028
Total Historical Count of files downloaded from this page:  37,079,126

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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: 29k
Dec 08, 2004 at 16:12
(497.65 days ago)
Downloads/day: 0
Total downloads: 63,102
Current Rank: 1
Historical Rank: 26

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 11, 1999 at 00:01
(2,444.32 days ago)
Downloads/day: 0
Total downloads: 71,699
Current Rank: 2
Historical Rank: 24

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
<pending>
(<pending> days ago)
Downloads/day: 0
Total downloads: 1
Current Rank: 3
Historical Rank: 27

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 14:17
(695.73 days ago)
Downloads/day: 0
Total downloads: 1,225,887
Current Rank: 4
Historical Rank: 5

DRDoS Attack Report
PDF file of the DRDoS attack web page
  

On January 11th, 2002, the grc.com site was attacked by a new style of extremely potent attack, a distributed REFLECTION denial of service. This 23-page PDF file explains the operation and consequences of this Internet attack. It may be downloaded for offline reading, printing, or sharing.


Last Updated:
Size: 214k
Feb 22, 2002 at 20:22
(1,517.47 days ago)
Downloads/day: 0
Total downloads: 218,604
Current Rank: 5
Historical Rank: 14

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 13:48
(2,207.75 days ago)
Downloads/day: 0
Total downloads: 100,666
Current Rank: 6
Historical Rank: 20

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 11:29
(1,546.85 days ago)
Downloads/day: 0
Total downloads: 211,617
Current Rank: 7
Historical Rank: 15

Original DDoS Report
PDF file of the first DDoS attack
  

On May 4th, 2001, the grc.com site was attacked for the first time by 474 Windows PC "Zombies" directed by a 13-year-old junior hacker who calls himself "Wicked." This is the PDF of the web page that tells the complete story.


Last Updated:
Size: 132k
Mar 05, 2002 at 22:30
(1,506.39 days ago)
Downloads/day: 0
Total downloads: 967,720
Current Rank: 8
Historical Rank: 6

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 12:12
(2,852.82 days ago)
Downloads/day: 0
Total downloads: 87,619
Current Rank: 9
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 12:07
(2,852.82 days ago)
Downloads/day: 0
Total downloads: 65,247
Current Rank: 10
Historical Rank: 25

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 22:07
(2,801.40 days ago)
Downloads/day: 0
Total downloads: 138,572
Current Rank: 11
Historical Rank: 17

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 21:56
(967.41 days ago)
Downloads/day: 0
Total downloads: 712,153
Current Rank: 12
Historical Rank: 9

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 10:54
(283.87 days ago)
Downloads/day: 0
Total downloads: 5,886,993
Current Rank: 13
Historical Rank: 1

LetShare
Quick and simple NetBIOS enabler
  

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 22:55
(1,551.37 days ago)
Downloads/day: 0
Total downloads: 87,921
Current Rank: 14
Historical Rank: 22

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: 23k
Jan 18, 2006 at 22:26
(91.39 days ago)
Downloads/day: 0
Total downloads: 1
Current Rank: 15
Historical Rank: 28

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: 9k
Jan 18, 2006 at 20:13
(91.48 days ago)
Downloads/day: 0
Total downloads: 1
Current Rank: 16
Historical Rank: 29

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 22:54
(1,551.37 days ago)
Downloads/day: 0
Total downloads: 136,597
Current Rank: 17
Historical Rank: 18

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 03, 2001 at 00:00
(1,874.32 days ago)
Downloads/day: 0
Total downloads: 2,902,444
Current Rank: 18
Historical Rank: 2

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 07:52
(1,090.00 days ago)
Downloads/day: 0
Total downloads: 1,481,333
Current Rank: 19
Historical Rank: 4

Small Is Beautiful (SIB)
Windows assembly language starter kit
  

I write all of my Windows and other utilities in 10015d4d58ure 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 21:11
(3,440.44 days ago)
Downloads/day: 0
Total downloads: 177,347
Current Rank: 20
Historical Rank: 16

SocketLock
Disable WinXP and 2000 raw sockets
  

As part of my struggle to convince Microsoft not to ship Windows XP with full raw sockets, I created this "SocketLock" utility. It easily enables and disables the system's raw socket capabilities to show that, contrary to Microsoft's claims, raw sockets are not, and never were, needed by any applications or users.


Last Updated:
Size: 22k
Aug 15, 2001 at 16:33
(1,708.63 days ago)
Downloads/day: 0
Total downloads: 356,756
Current Rank: 21
Historical Rank: 10

SocketToMe
Check your Windows OS for raw sockets
  

I worked quite hard (and failed) to convince Microsoft not to ship Windows XP with full raw socket capabilities built-in. This "SocketToMe" utility lets any Windows user determine the level of raw socket support currently available to the logged on user.


Last Updated:
Size: 17k
Aug 12, 2001 at 00:32
(1,712.30 days ago)
Downloads/day: 0
Total downloads: 301,847
Current Rank: 22
Historical Rank: 12

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: 59k
Dec 08, 2004 at 16:12
(497.65 days ago)
Downloads/day: 0
Total downloads: 89,741
Current Rank: 23
Historical Rank: 21

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: 161k
Dec 08, 2004 at 16:12
(497.65 days ago)
Downloads/day: 0
Total downloads: 119,731
Current Rank: 24
Historical Rank: 19

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 23:07
(2,943.36 days ago)
Downloads/day: 0
Total downloads: 274,173
Current Rank: 25
Historical Rank: 13

Trouble In Paradise (TIP)
Check Iomega drive operation
  

Iomega ZIP and JAZ drives suffer from a head positioning problem (servo stiction) that can actively and permanently damage perfectly good ZIP and JAZ drive media. TIP (Trouble In Paradise) provides an early warning system when a user's drives are beginning to damage its media.


Last Updated:
Size: 48k
Sep 03, 2004 at 13:34
(593.76 days ago)
Downloads/day: 0
Total downloads: 308,485
Current Rank: 26
Historical Rank: 11

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 15:47
(1,573.67 days ago)
Downloads/day: 0
Total downloads: 2,289,074
Current Rank: 27
Historical Rank: 3

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: 37k
Jul 27, 2002 at 21:19
(1,362.44 days ago)
Downloads/day: 0
Total downloads: 723,970
Current Rank: 28
Historical Rank: 8

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 10:22
(1,310.89 days ago)
Downloads/day: 0
Total downloads: 958,891
Current Rank: 29
Historical Rank: 7

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of this page are Copyright (c) 2016 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.
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Last Edit: Jan 01, 2010 at 14:40 (2,817.96 days ago)Viewed 1 times per day