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 66,922 times.
Operating Details
(14 pages)
Downloaded 9,124 times.
(26 pages)
Downloaded 10,383 times.
On The Wire
(18 pages)
Downloaded 6,388 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 https://sqrl.grc.com 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
(577.01 days ago)
Downloads/day: 10
Total downloads: 24,843
Current Rank: 16
Historical Rank: 32
The SQRL Story” Presentation at TWiT Studios, Petaluma, CA:

Link for downloading and sharing: https://grc.sc/sqrl
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 (1,313.36 days ago)Viewed 322 times per day