NOW SpinRite 6.1 – Fast and useful for spinning and solid state mass storage!
100x100 SQRL Logo   Secure Quick Reliable Login
A highly secure, comprehensive, easy-to-use replacement
for usernames, passwords, reminders, one-time-code
authenticators . . . and everything else.

Click the thumbnails below to download their PDFs:
SQRL Explained
(22 pages)
Downloaded 71,050 times.
Operating Details
(14 pages)
Downloaded 10,293 times.
(26 pages)
Downloaded 11,719 times.
On The Wire
(18 pages)
Downloaded 7,175 times.

This document set provides a complete description, technical overview and explanation of every feature of the SQRL system. Various SQRL clients and server components currently exist for Windows, Linux & macOS (with WINE), Android, iOS, Chrome, Firefox & Edge. And SQRL demo websites may be used to experiment with SQRL's operation and features.

The SQRL Forums are online and available at to anyone who is curious to learn more. THERE, you will find the SQRL community including the LATEST information and:

GRC's reference SQRL client for Windows can be downloaded with the links below:

File stats for: SQRLfile download  freeware page
Last Updated:
Size: 284k
Feb 23, 2022 at 20:38
(876.14 days ago)
Downloads/day: 6
Total downloads: 27,074
Current Rank: 19
Historical Rank: 33
The SQRL Story” Presentation at TWiT Studios, Petaluma, CA:

Link for downloading and sharing:
The SQRL Story” Presentation to OWASP, Dublin, Ireland:
The SQRL Story” Presentation to OWASP, Gothenburg, Sweden:

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Last Edit: Feb 18, 2020 at 12:16 (1,612.49 days ago)Viewed 404 times per day