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Gibson Research
Corporation





Begin using our commercial software moments from now.

Our software is licensed for download and use by individual end users on one or more of their personally owned machines. Consultants who wish to use our commercial software on their client's machines, and corporate business entities, must maintain four copies of our software at its latest revision level to qualify for site license usage. (See this page for additional information on consultant/corporate site licenses.)
Absolute Satisfaction Guarantee — We stand behind our products proudly and would never want you to regret your purchase. If you are unhappy with anything you purchase from us, for any reason, we will refund your purchase without question. (See this page for additional information.)
Payment for software licenses may be made with the following major credit or debit cards, with immediate fulfillment by Internet download:

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GRC's electronic commerce system is compliant with PCI DSS, the Payment Card Industry Data Security Standard. All communications and data storage is encrypted and secured.
Our software is written in assembly language, so it is always small and fast to download, even over the slowest connections. Therefore, we do not offer delivery of software or documentation on physical media. It is only available through download.
After-sales support is available via electronic mail at . GRC's public web forums provide an extensive knowledgebase which may be freely searched and read without account or logon. Any questions posed will be seen and answered promptly. No product owner is ever abandoned.
If you wish to purchase more than one license, choose the product below, then you may adjust its quantity on the next page.
Any software purchased online may be replaced or updated to its latest version at any time. The personal and private Transaction Code provided on your purchase receipt will always allow you to display your purchase receipt with active download links. See our Customer Service page for more information.

 SpinRite v6.1First time purchaser
$ 89.00  

First time purchasers of SpinRite should choose this item to purchase a license for SpinRite v6.1. SpinRite's user-interface is largely self-documenting and additional online documentation is supplemented by our very active GRC web forum where questions may be asked of many knowledgeable SpinRite users.

 DNS Benchmark v2Lifetime owner
$ 9.95  

Purchasers of our DNS Benchmark receive a lifetime license with an entitlement to the product's entire future — all updates and upgrades — at no additional cost. GRC's website contains many pages of user documentation which is currently being updated from v1 to v2. Additional online support is provided in our very active GRC web forum where questions may be asked of many knowledgeable DNS Benchmark users.


All currencies are US Dollars. Non-US currencies will be converted at the prevailing rate of exchange by your credit granting institution.
Please address any pre- or post-purchase questions to , and any pre- or post-purchase technical questions to .
Thank you for your support of our commitment to developing the highest quality tools and technology for preserving the health, security, and integrity of personal computing.

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Gibson Research Corporation is owned and operated by Steve Gibson.  The contents
of this page are Copyright (c) 2026 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: Dec 26, 2025 at 12:47 (23.48 days ago)Viewed 722 times per day